Virtual Valve Museum Guestbook

This is historic and not maintained or updated

Colin (colin at bevan51 dot freeserve dot co dot uk) sent the following at 09:55 on 9 July 2006

As is usual in these situations I came across your website whilst loking for something else and stayed to browse.

How absolutely fascinating. My own career with Valves started in 1964 when I joined the Royal Navy to become an Artificer, after you had done the 6 year apprenticeship of course. Your mention of the B40,B41 receivers, type 28 TTY, creed paper tape punches,etc etc revived many memoriess.

It would reduce someone like yourself to tears if told you how many and what sorts of kit I have thrown over the sides of so many ships during the 26 years I was sailing the 7 seas. there are quite a few on your wanted list. It was common practise to empty the contents of the valve cupboard over the side whenever a ship was coming in for refit as we didn't want to be bothered lugging it all ashore to the dockyard stores and then having to put it back in store. Then there was the situation where a spare was ordered from the Rate Book and the "Scribes" put down the wrong NATO number,just by one digit, and instead of 6 X CV32's I got a 16" Bronze motorboat screw (propellor to you). Ah me lost youth. I never kept any of the "JUNK" sorry to say, but thanks for reviving the happiest days of my life, and I wish you every success. There are not enough people in this world like yourself.

Best wishes Ex Chief Electrical Artificer Bevan CJ 984519L (Radio)

Robert Farey (robert dot farey at btinternet dot com) sent the following at 19:47 on 3 July 2006

I wonder if anyome can tell me the difference between 6sj6b and 6sj6c and can one be used in place of the other as pins look the same.

John Felkner (john.felkner at us dot army dot mil) sent the following at 18:51 on 22 June 2006

The Virtual Valve Museum is captivating, and serves as quite an education for those of us who have seen almost no tubes in operation. You have done a great service by putting your collection on line. Makes one really appreciate software-defined radios!

Willem (apeld178 at planet dot nl) sent the following at 14:56 on 13 June 2006

I am interested in a data sheet or data concerning a Litton M/ 4193B / 7692 electron tube.
I want to experiment with the tube without damaging it.
Regards, Willem

Dick Pache (dick at ramseymail dot com) sent the following at 01:15 on 19 May 2006

I came here via the 5593 GE Phasitron. A FM magnetic modulator tube. My fist job at Sylvania Television in Batavia N.Y. under John Diehl W2QWS was to convert it to 4.5Mhz for use in TV alignments. What a neat job for a young ham operator. I read and reread to theory of operation of the Phasitron many times working on the project. I now am retired in Tegucigalpha Honduras with solid state radios but my son sent me a Kenwood tube final rig this week, should arrive in a few days. 73 De K2LCT/HR1

Daniel Chiu (diamondlink05 at hotmail dot com dot au) sent the folloowing at 05:58 on 1 May 2006

Dear Curator,
I would say that how amazing on your web-page.
Thank you!
Best regards!
Sydney
Audiophile Society of NSW
Australia.
Daniel Chiu.

Graeme James Wilson (annawilson at dodo dot com dot au) sent the following at 01:38 on 27 April 2006

Great to be on board, live in island state of Tasmania and always been fond of valves, looking for cv28
thanks for opertunity, graeme

Earles L. McCaul (elmccaul at comcast dot net) sent the following at 16:26 on 24 April 2006

Howdy Jeremy! Excellent website and very nice pictures. But, I also have two questions which "maybe" you can help me with:

A) do you know the designation of the magnetron used in the AN/APS-20B/E airborne search radars (I flew in EC-121)?

B) do you know of ANY published Eb-Ib curves for 6CA7/EL34 power pentode that show Ib vs. Vb and Vg2 with Vg1=0?

I'm researching the plate-to-screen 'current split' ratio differences between power beam/kinkless tetrodes and power pentodes, and cannot find this info for 6CA7/EL34, at least not in the RCA, GE or SYLVANIA tube manuals.

Gert (g dot klomparends at hetnet dot nl) sent the following at 22:59 on 15 April 2006

dit is een zeer mooie web site waar ik een hoop informatie van af haal! zijn er meer Nederlanders die hier rond kijken?

wish you the best with your tube collection!

David Land (David dot Land1 at btinternet dot com) sent the following at 15:10 on 16 April 2006

Browsing the site as I do from time to time I noticed the STC 5B/254M series listed as "pentode" - actually beam tetrodes with an 807 equivalent performance. Looking at their characteristic curves (www.retrovox.com.au/5B254M.pdf) the "kinkless tetrode" designation was not entirely approptiate.

Interestingly looking at EL34 information on www.radiomuseum.org/tubes, Philips originally put their 1947 post-war uprated output pentode design EL60 on the 9-pin Loctal B9G base first developed for the EF50 and subsequent valves (1938). This was not a commercial success (remember the EF50 pin to socket contact problems!). The structure would have been too tall for for a pinch type octal-base construction but fitted fine to the Loctal 8-pin button which Philips had started to use in 1941. I suspect they saw no enthusiasm for this base too, particularly since the 7 and 9 pin miniatures were about to come into commercial use, but the B8G pins are on the same p.c.d. at the octal pins so we have the very reliable EL34 construction of the past 58 years (look at an early "metal ring" EL34). So 25W in a Loctal envelope about a decade before STC? (but STC must have had to shift an awful lot of 807s first!)

Mgbada Onyeoru (mgbadaeze at gmail dot com) send the following at 10:34 on 25 March 2006

Hi I have purchased a telefunken valve radio 654wk trop and I was wondering does any one have any information about this radio and what it could be worth I cant find any information about this radio at all thankyou

Christopher Winstanley (electrocomp at btinternet dot com) sent the following at 16:29 on 21 March 2006

CAN ANYONE HELP, I have a 20th Century electronics oscilloscope tube with the number SBRK/127 or the B could be a 6 it is a rectangular 7 inch X 5 inch electrostatic, and I am desperate to find out the pin connections and also operating data, if anyone can help I woulds be very grateful, Chris

Barrie Gilbert (barrie dot gilbert at analog dot com) sent the following at 08:24 on 12 March 2006

I have nothing to sell, and only praise to give - freely. This is a wonderful treasure trove of those great years when an "active device" was something you could also warm your hands on - or even make toast, if a little to liberal with the plate supply. I found my favorite faithful CRTs, including the VCR97 extracted from an Indicator Unit 62A, the VCR138 from an IU 6A, a white-phosphor VCR517 and the baby (of my family) the VCR139. So much else in this great collection stirred deep nostalgia. Thank you for making it available to this old timer. I expect to return, and after looking at your "Wanted" section, I may be able to dig into my own reserves and waken them from their reveries.

Dr. Barrie Gilbert,
Life Fellow IEEE, Fellow ADI
Director, NW Labs, Analog Devices Inc.

Michelle (lindsay69 at optusnet dot com dot au) sent the following at 19:17 on 2 March 2006

melbourne australia
hi i have purchased a telefunken valve radio 654wk trop and i was wondering does any one have any information about this radio and what it could be worth i cant find any information about this radio at all thankyou

Don Kunze (dflind55 at aol dot com) sent the following at 02:52 on 18 February 2006

Very interesting. I've been an on again, off again collector for about 40 years. Nothing specific, just cool looking ones.

Thanks,

Don

Paul Lane (sales at laneelect dot wanadoo dot co dot uk) sent the following at 12:50 on 16 February 2006

Very good site. I keep coming back for information
I have lots of books on old radio and valves from the 1930-1950, I would like to copy theses to pdf so Ican show them on a web site and people will be able to down load. How can I find out if they are still under copy right.

George Hammond (george dot hammond at blueyonder dot cos dot uk) sent the following at 10:37 on 1 February 2006

Brilliant site. After looking for a few mundane things I looked for 'NUVISTOR' as I used to make a TV camera that used one in the front end (before the days of FET's). That sure brought back memories. Many thanks & keep up the good work.

George

Andrew Wylie (Andrew_Wylie at compuserve dot com, http://ourworld.compuserve.com/homepages/Andrew_Wylie) sent the following at 11:37 on 24 January 2006

Hello,
please have look at my site about historic semiconductors. See the page on UK transistor industry for links to detailed pages on STC, GEC and Mullard. I plan to add more such detailed pages, and may include one on CV marked transistors, of which I have many. I found your site when trying to understand the two-letter date codes on GEC and Mullard transistors - it looks like the CV date code to me.
Best wishes
Andrew

Ed Gable, k2mp (egable at rochester dot rr dot com, www.antiquewireless.org) sent the following at 10:33 on 13 January 2006

Jeremy: I have enjoyed your site and have used it as a resource in the past. Thought it time to compliment you and say thanks for providing such a nice resource.
Warm regards,
Ed Gable
Curator, AWA Museum#
Bloomfield, NY

Sheldon Rabin (srabin at earthlink dot net) sent the following at 01:33 on 9 January 2006

Many years ago I worked at Bell labs in NYC and "used" a Magnetron to pulse a super-cooled crystal specimen in a megnetic field.

These experiments led to the developement of the Maser, laser, and NMR spectroscopy. great exhibit and remindeer.

Thanks, Sheldon Rabin

Hans Peter Moessner (hpmoessner at aol dot com) sent the following at 04:06 on 3 December 2005

Although not sure, I think the "unknown" CV6177 might by a X-Ray Generator. I have seen similar structures before.

The cathode is at the top and the electrons are focused on a target, probably made of tungsten or copper, inside the lower cylinder. The x-rays then exit through the window.

Operating voltages, typically in the 60...150kV range require the rounded edges in the middle of the tube to prevent corona and arcing.

Marcel Meys (Marcel dot Meys2s at telenet dot be) sent the following at 22:15 on 14 November 2005

ON5VX / Surplus Radio.
The 860(as Oscilator)and 861(As PA),are used in the TBM-12 Transmitters on Liberty-Ships in WW-2.
I have so a TBM-12 in my Collection (new boxed)without Tubes.
Greatings.

David Knight (fixman88v5 at gower dot net) sent the following at 23:34 on 4 November 2005

Your site is incredible! I was researching magnetrons and had no idea there were so many kinds! I have worked on tube (valve) equipment before, but I had never seen a nuvistor tube before. I am familiar with nixie tubes but had never seen an acorn tube before! Once I assisted in the replacement of a transmitter tube in a 25kw FM transmitter, but I didn't know that transmitter tubes could be so huge!

Dave S. (dsv at escape dot ca) sent the following at 07:17 on 1 November 2005

Great website! With all the billions of documents on the web, it's surprising how difficult it is to find info on old tubes. I salvaged a couple of Mullard CV273's from a beautiful old piece of precision test equipment (regrettably water damaged beyond repair) and thought it would be interesting to build up a project with them. Wish I could find pinouts and ratings on them, but your museum has at least given me a starting point (I have since added the data - JMH). Thanks for your excellent work.

Regards
DS

Frithjof Sterrenburg (fass at wxs dot nl) sent the following at 10:16 on 31 October 2005

Compliments for a stupendous website, Jeremy. It came in very handy as I had a CV132 I could make neither heads nor tails of. I'm not particularly "into" valves as such but since 1950 or so I've been tinkering with valves, either to restore vintage equipment or to build equipment. I greatly prefer valves over semiconductors if such an alternative is possible (i.e. NOT for a frequency synthesizer!) and one example is my griddipper for 60 kHz (yes) to 160 MHz using an EM87 magic eye, which is still being used intensively after 30 years and was good enough for Pat Hawker to include it in his Amateur Radio Techniques book. Keep up the good work!

alexandre l. g. (alexgirard1 at hotmail dot com, http://www.lavoie.populus.ch) sent the following at 23:04 on 13 October 2005

Hello.My name is alexandre.I'm 13 years old.I am reside at quebec.I love a tube. I'm posseded a gig collection. I like your site web. Please contact my and give a information for collector tube. In french please.

Peter Waddell (peterwaddell1937 at hotmail dot com) sent the following at 18:33 on 13 October 2005

Does anyone have details of multi cavity magnetrons made by English Electric in WW2.

John Massey sent the following at 15:06 on 21 September 2005

Any information please on a Mullard CRO tube DG4-2? Octal base. At the school where I work we have a wonderful archaic piece of kit by Unilab, must date from the late 50s-early 60s. Just one of these tubes in a black bakelite case, with the circuit diagram and connections engraved in white. The tube works, but can't get the biassing arrangements to make a good spot.

You didn't leave an e-mail address but check here for the DG4-2 data from http://www.tubedata.info/

John Berrys G1WOS ( jbbr35487 at blueyonder dot co dot uk ) sent the following at 11:22 on 13 September 2005

Great Site.Invaluabale for identifying some of the "Odd" valves picked up at rallies/swapmeets cheap because they looked "Interesting" !!.

Stan Slabyhoudek ( slava at karneval dot cz ) sent the following at 09:54 on 31 August 2005

Your collection is great!I do know, what it is together trouble and pleasure. I have worlds great collection of light sources, you can see it here:

http://muzeum.pre.cz/soukrome_sbirky/zarovky/
http://bulbcollector.com/gateway/Historic_Collections/Stanislav_Slabyhoudek

my best regards
Stan

bernardo ( valme at ats dot it ) sent the following at 09:18 on 27 August 2005

I am an Italian tv collector I have a Uk Cossor television set with radio the model is 924 television set have tube CRT (the model I am MW 3171) broken and I would want to know if I can find of one of substitution or equivalent eventually, how is the price? ciao from Tuscany my email: valme at ats dot it

Giuseppe Rubini (gsrubini at infinito dot it) sent the following at 22:32 on 15th May 2005

My compliments to your website. Hope that you can always update and improve the same. It is surely useful and positive!
Best regards,
Giuseppe Rubini, I7RUX as OM

Graham Stratford ( gstratford1 at cogeco dot ca ) sent the following at 00:21 on 9 August 2005

Nice website. Found a reference for a 1B40 that I saved from an APX-6 IFF unit. Thanks.

Paul Cobb ( rpcobb at mtco dot com ) sent the following at 02:23 on 18th July 2005

I am not familiar with vacuum tubes, but I have found several large tubes that I am told are transmitter tubes.

CWL 861 Westinghouse
CRC 860 RCA.

Thses tubes are 5 to 8 inches dia and 12 to 15 inches high

What are they and is there any interest in them. I have several of each.

Paul Cobb

Tony Llewelyn Jones sent the following at 01:20 on 15th July 2005

Hi,

I Studied City & guilds TV repair at college but I did'nt follow it up after leaving and ended up as a cinema projectionist instead. While I was studying I wanted to get more into the transmission side of things and I started reading about Klystrons/Magnetrons etc in my spare time. As I did not follow my career through, I've always been curious[Even now]what thease Klystrons looked like! I'd also read that some were six foot high. Anyway to cut a long story short,your museum has solved my curiosity!!

Regards

Tony [Bangor,North Wales,UK]

Tim Christian ( tim at isoplethics dot free-online dot co dot uk, www.isoplethics.co.uk ) sent the following at 23:11 on 25 June 2005

Great site. Saved me hours of research. Thanks.

Geoff Valentine (VK3GV) ( grvalentine at optusnet dot com dot au ) sent the folllowing at 08:16 on 15 June 2005

Fantastic show. Great to see the old valves. Excellent collection. Cheers..

I. Allen ( isabelleallen at yahoo dot com ) sent the folowing at 15:49 on 12 June 2005

is anyone interested in a one bit memory module from the Whirlwind Computer? The real thing, circa 1950's. For SALE.

Nick de Smith ( nick at desmith dot net ) sent the following at 09:30 on 25 May 2005

Hi,

The CV2486 data you have is under "gas filled triode". Whilst the data sheet uses this terminology, its actually a trigger tube. Also, it's known as an XC18 in the UK.

Thanks

Nick

Henk (huitemaster at gmail dot com) (http://kathodyne.coconia.net) sent the following at 16:59 on 15th May 2005

I have been looking around for info on the cv1198 triode... I found your specs...would you maybe know where to find a datasheet of this tube?????

Greetings,
Henk

Patrick Lehrman de N9JPV (pyropat at mail dot allways dot net) sent the following at 05:52 on 12th May 2005

Great Site, I just became the owner of a tungar 1/2 wave rectifier type 89U4 and was looking for a reference. Glad I've found this site.

Ant GW0AJA (vvm-aja at t8o dot org) sent the following at 19:57 on 8th may 2005

An excellent site! I've just started to tidy up my casual collection, I'll be in touch if I find anything new.

Kenny (jukeboxguy514 at aol dot com) sent the following at 07:17 on 4 May 2005

I have just stumbled on this site and have now been here for two hours!!!! this is the best site that I have ever seen allthough I have noticed that you have just about everything on here, there are a few things that you dont, here in the USA from about (I am guessing) 1965 to about 1978 general electric (GE) brought out a huge line of tubes known as the COMPACTRON © this tube was a big bulb type tube that found applications in all types of consumer goods, it was a big bulb tube (sorry VALVE) that consisted of as little as two valves or as many as five valves in one bulb they had small connection pins from 9 pins to as many as 12 if you would like pictures or even want a few of them (I have a box full of them) just let me know and keep up the great work
Kenny

Graeme Wilson (annawilson at dodo dot com dot au) sent the following at 11:15 on 29 April 2005

I have been fasinated with radio valves since I was about 10 years old, they still are of misteke nature to me, I had several thousand some 20 years ago from the Nuvistor to very large transmitting types, I now only have some to refurbish my 5 cabinet radio's with. I am looking for some to refurbish my Eddystone 680X with. Thanks for this opertunity to comment on something that is dear to my heart and brings back fond memories of many years ago, sincerely, Graeme.

Tim Hairston (questz1 at adelphia dot net) sent the following at 12:34 on 26 March 2005

Excellent website. Thank you!

Larry J Small (s2360 at hotmail dot com) sent the following at 12:19 on 11 March 2005

While in the Air Force I worked on tons of Tybe type Equipment. I see my old 4J50A Radar Magnetron here.
Great web site Thanks
Larry

Jim Falls, KG6FWT (jim.falls at conservation dot ca dot gov ) sent the following at 17:44 on 28 February 2005

Many thanks for the pin-out data! All other specs are readily available, but the pin allocation is difficult to find. I'll have my old-time power supply glowing in no time w/thanks to you!

Sandeep Mani (sandeepm at giasdl01 dot vsnl dot net dot in, www.sandeepmani.com) sent the following at 04:41 on 28 February 2005

I have about 150 rectifier tubes (can give the exact count) of the following rectifier tubes

Philips 1163
GE 217283
12X825.

Any takers?

Sandeep Mani, New Delhi, India

Perica Adnadjevic (peternix at neobee dot net) sent the following at 21:48 on 24 February 2005

I'm big fun of old electronics,and I want to know much more about it.Looking for Neuberger RPM370 tester and Siemens old triode named Ea.
Best regards,Peter.

Jan de Vries, PA3FVQ (jhpevriess at quicknet dot nl) sent the following at 11:44 on 24 February 2005
You constructed a mavelous site. While trying to organize my rather large collection of tubes, I found many of which I knew nothing, and also could not find info in my books and other internet sites, TILL I FOUND YOU! Great, keep up your excellent work,

73,

Jan

DBH (saidthecat at postmaster dot co dot uk) sent the folowing at 01:45 on 2 February 2005
Wunderbar!

Jeff W. Parisse (jparisse at teslacoil dot com) (www.teslacoil.com) sent the following at 19:22 on 27 January 2005
Great work! Amazing collection!

Warwick Strain (seawolf at aceconnect dot com dot au) sent the following at 21:50 on 11 January 2005

As a collector of Vintage Radio's & Valves I am interested in all informative sites.
Well done.

Louis-Norman Wells (louis.wells at wanadoo dot fr) sent the following at 10:22 on 27 December 2004

I was involved in the development and production of airborne radar and Ecm systems during WW2,and subsequently in the development of Simulated Radar-fire control systems. I am looking for information on Lutfwaffe Airborne Radar Training devices developed during world war 2. can anyone help?

Mike Oliva sent the following at 13:14 on 23 December 2004

Hi, my name is mike. I am 18 Im an antique radio and tube
collector. As of now I have about 30 radios 1 tv and over
1000 tubes, mostly radio and tv. those few tubes that i
did reconize were the 1p41, 923, 7586, 12ax7, 12au7, em81,
em84, and 3b28. I thought that your collection was quite
fasinateing. Ive never seen tubes like those before.
I enjoyed browsing your website, and looking at the pictures.
mike oliva

Andrew (neg2led at gmail dot com) sent the following at 06:49 on 11 December 2004

Hi,
my name is Andrew and i want to build a small 1-valve radio set. i have a schematic for a device using the CV2983 / 3V4 pentode valve, but i dont know where to acquire one. can you help?

neg

Michael Anton (redglare57 at hotmail dot com) sent the following at 03:41 on 14 November 2004

Gentleman,
What a terrific site! As a visual artist (photographer) with a long interest in the history of industry and
technology, I stumbled across your page by accident. It's one I will definately keep coming back to.
Thanks for all you do.
Sincerely,
Michael Anton

David Cutter (G3UNA) sent the following at 16:40 on 7 November 2004

I just put CV2131 into Google and it came up with your website and there was exactly the valve I had, with an excellent photo. Thanks for the info and your public spirit in maintaining this very useful data base.

Steve Krull (Steve-Krull at cox dot net) sent the following at 23:22 on 3 November 2004

I am looking for information such as data sheets or technical specifications and requirements for two carcinotron tubes manufactured by Thompson. They are model number TH4221A and model number TH4232. Any help would be appreciated!

Kevin Avery (G3AAF) sent the following at 11:11 on 25 October 2004

Great site keep up the good work

Best Regards

Kevin G3AAF

Pieter van Duyvenbode sent the following at 15:41 on 5 October 2004

Dear Sir,
The AEG CRT type nr AEG HR1/60/0.5 is not longer unknown to you anymore.
The code means:
HR = H...... Röhre
1 = Single electron ray.
60 = Screen diameter = 60 mm.
0.5 = Anode voltage = 0.5 kV.
The data have been extracted from Praktische meetinstrumenten page 244, written by Herbert Lennartz. This book is translated from German into Dutch (Flemish). It has been published in 1946(?) by P H Brans, Isabellalei 97, Antwerp.
Uf = 4 V; If = 1.2 A; Ua = 500 V; Ua1 = 180 V;
2 Pairs of deflection plates;
Sensitivities: p1 = 0.18 mm/V; p2 = 0.13 mm/V.
Capacities: Cx = Cy = 3.5 pF; Cg = 11.5 pF.
I hope I have satified your needs in this respect! I wish you a great lot of success with your rather big and great tube-collection.

Yours sincerely,

Pieter van Duyvenbode, M Sc
Electrical Power Engineering
Hanzehogeschool Groningen, Netherlands.

Pieter van Duyvenbode sent the following at 14:26 on 30 September 2004

I can unveil another "MYSTERY" with regard to cathode ray tube, make AEG, type nr: HR2/100/1,5A. The data have been extracted from the book: Praktische meetinstrumenten page 244, written by Herbert Lennartz. This book is translated from German into Dutch (Flemish). It has been published in 1946(?) by P H Brans, Isabellalei 97, Antwerp.
The CRT is a double-ray tube with the following data:
Type Tetrode.
Uf = 4 V; If = 1.2 A; Ua3 = 1.5 kV; Ua1 = 400 V
Ua2 = 320 V.
Ua = 1500 V; sensitivity: p1 - 0.26 mm/V
p2 - 0.24 mm/V

This CRT-code can be put into "CLEAR-TEXT":
HR = H.....Röhre.
2 = two electron guns.
100 = screen diameter in millimetres.
1.5 = Ua in kilovolts.
A = serial character.

In advance I thank you for your attention....

Pieter van Duyvenbode, M Sc, electr power engineering,
Hanzehogeschool, Groningen, Netherlans.

The following was posted at 17:58 on 21 September 2004

I enjoy the website.

Note about CV107: The patent given, SV123805, is the same as the British one GB589023, and is for the original T/R work of Cooke, Skinner and Ward, which was applied for April 1942. The Patent was published after the war, and is the same as US Pat 2,738,418.

Michael (MHof2268 at aol dot com) sent the following at 18:26 on 20 September 2004

I am trying to find information on a valve tube I have. It is engraved with oriental writing (or so it looks) and has the number "UZ12C" in the typical octagon. On the back it has "NO.1463" It is a 6 pin complete with socket. This tube looks unused and I have been unable to obtain info. Any info is appreciated. Thanks!

Adrianus Heriady (aheriady at yahoo dot com, http://www.geocities.com/adrian_engineering) sent the following at 09:25 on 16 September 2004

thanks for tubes datasheets and outline pins
73,..
YD0LOG

Bob Chevako (bob13122 at frontiernet.net) sent the following at 23:10 on 14 September 2004

The LN-12 looks like it might be a monoscope, which is similar to an iconoscope video pickup tube, but with a fixed pattern etched onto the inside of the front disk (typically used for high-resolution test-pattern generation, or for station call-sign logos or other fixed video patterns). The etching could have different secondary-electron emission characteristic from the rest of the disk, and that difference gives the video signal in the pickup of the secondaries by the cone. Check out older (and bigger) iconoscopes to get a feel for the operating voltages needed.

Vic Ludlow (v.ludlow at ntlworld dot com) sent the following at 11:28 on 1 August 2004:

A very interesting and valuable site - it will be of great use as a reference site for the part-time staff members at the Signals Museum, RAF Henlow - Thankyou.
Vic

Antonio Giron (ag004 at eurocomercial dot es) sent the following at 20:05 on 28 July 2004:

Nice site! Brought back many fond memories. Also provided some additional info on a Philips TB2,5/300 valve I've had for many years. Very similar to your TB2,5/400, except the lettering on mine is pristine, and it has an unused ceramic socket. Will be happy to send you a picture if you want.

Giorgio Basile (giorgio.basile at skynet.be, Belgium) sent the following at 09:16 on 28 July 2004:

You are really doing a GREAT job! As a tube collector, this site is my favorite tool, and I visit it almost everyday. The quality of iconography and technical details, and the great number of unusual tubes, are incomparable.

Many many thanks for sharing with us your collection, and for the time you spend to keep this terrific site still growing.

Don Campbell (tubes at yestertronics dot com, yestertronics.com) sent the following at 19:25 on 25 July 2004:

Very nice work on you website. I am also a tube collector.
Your photographs and layout are done very well. Please visit my URL. I am just getting started.
Good luck with your work, Don and Liz Campbell

Lafonta (113217.345 at compuserve dot com) sent the following at 21:09 on 12 July 2004:

I think the last photo in the geiger tube section is in reality a RTC tube ORP90, whose function is near infra red detection ( PbS sensitive internal coating )

Anjo (anjo at vandergragt.nl) sent the following at 10:56 on 11 July 2004:

At last found all the data of those tubes in my junkboxes.
Thanks keep up the good work.
I also have an old army document (1960) with many CV numbers If you can't find it here then give me a mail.

Greetings Anjo ( PA0FAN )

Zahi N. Hakim (znhakim at cyberia.net.lb, Beirut - Lebanon) sent the following at 17:20 on 4 July 2004:

Excellent website.
Personally much interested in old x-ray tubes and tube rectifiers. Visit my website (GOOGLE - Search for: ANTIQUE X-RAY TUBES AND ACCESSORIES).

Tom Jennings (tomj at wps dot com; http://wps.com) sent the following at 23:50 on 4 June 2004:

Hey, nice site! Just looking up some tubes I've had for a while... by the way, you might want to mention that a lot of the TR tubes (and spark gaps, and similar oddities) are radioactive. Most are relatively minor, containing Kr gas that dissipates quickly, but many contain Cs (cesium) as a salt, and a few, like the 1B24, relatively large amounts.

The gamma radiation isn't much of a threat unless you wear it on you body, but if broken the (Cs, Ra) metal salts will be all over the d ebris, your hands, floor etc. Not Good.

One of my 1B27's has the little tri-fan radiation symbol, but none of the others. Most are pretty low-level (like a half-dozen old radium-dial watches) but that 1B24 is pretty hot, some 200,000 counts/minute on my commercial meter, no immediate threat but I wouldn't sleep next to it every night!

Thanks again for all the data.

tomj

Jim Vogelsong (jamesv6095 at aol dot com) sent the following at 19:03 on 22 May 2004:

Was happy to find your site while looking for info on CV147 infrared image converter. Thanks for CV147 photos! I made a snooperscope using CV147 over 50 years ago. Have still have four CV147s and plan to use one to make newer version of snooperscope. Was looking for description of how CV147 works. Thanks

Harv Hontz (shadow at buffnet.net) sent the following at 23:01 on 03 May 2004:

Great site..Keep up the good work..I know its an immense task but you are doing a fine job..

Antonio Jorge Carvalheira (ajcevergreen at yahoo dot com dot au) sent the following at 15:30 on 03 May 2004:

Hello.
I am a portuguese telecommunications eng. I am a Hamradio CT1-DMU. I have some old electronics and communications equipment. This site is very good. Thank you very much.
Best regards
AJC

Don Holker sent the following at 20:31 on 30 April 2004:

Great site, the only place I have found the CV66 pinout. Pictures are excellent. Regards your CV43/CV101 combination the unidentified aperture could be the injection port for the signal from the klystron local oscillator.
Keep up the good work.
Don Holker
Blandford UK

Tony Woolf (thewoolfs at tiscali.co.uk) sent the following at 19:58 on 28 April 2004:

The site brings back memories! I worked in the Development Lab. at Footscray from 1952-58. Thank you.

Sam (sam at pis.uk.net) (http://www.pis.uk.net) sent the following at 15:30 on 28 April 2004

Nice site

Joe Suarez (josespi at ameritech.net) sent the following at 17:25 on 25 April 2004

I found the site by accident but got a kick out of looking up some old tubes. (I am aka W9RFC)

Charles L. Croatman, Jr (wb2zks at optonline.org) sent the following at 15:59 on 25 February 2004

Finally!: A source of information on the EF50!
Will be getting my MK II on the air in a few years....

73: Charlie

Y. Uda (uda at ieee.org ) sent the following at 06:30 on 23 February 2004

Great site! For the first time, I found CV57 data on the Web site. I have been looking for them for several years after I bought four CV57s from a UK valve dealer.
Best regards from Japan.

Alex (alexx at tx.technion.ac.il) sent the following at 13:25 on 9 February 2004

very interesting,
what about planar triodes like 7768 and CV10389

Alex

Jack T.Levandovski sent the following at 22:52 on 8 February 2004

Dear Sirs,

I find your site to be absolutely GREAT!!!
And am very happy to have found it.
I also like the old tubes knowledge.
A humble remark to your site: please kindly remove the tube EC70 from the company of octodes.It went there by a mistake.

Yours faithfully,

Jack

Stanislav Slabyhoudek (slava at karneval.cz) sent the following at 11:17 on 14 January 2004

Very interesting pages, in spite of I collect the light sources. But in collection I have also few pieces of interesting valves, that it is a pity put it to trash!
best regards,

Stan

Albert (antiekeradio at freeler.nl, http://radiotechniek.cjb.net/) sent the following at 15:35 on 5 November 2003

You did a great job i'm a collector of old radios but i didn't know that there are so many strange tubes Thanks to you for the great job.

Best regards Albert

Rolf Siekmeier (siekmeier6 at compuserve dot de) sent the following at 15:35 on 26 October 2003

Thanks for this nice stuff !!

I enjoyed it. Keep it running. btw: Very fine photos !!

Greetings: Siekmeier

Joe Cro - N3IBX (n3ibx at arrl.net, http://hometown.aol.com/yardleyite/index.html) sent the following at 19:39 on 25 October 2003

Terrific site!

The following was sent at 12:49 on 20 October 2003

CAME TO SITE LOOKING FOR INFO JUST ON CV6 EX 19 RADIO SET. STILL HERE 2 HOURS LATER. BRILLIANT THANKS.

Jim Tidwell sent the following at 05:18 on 20 October 2003

A fantastic site with a wealth of information! I'm a tube novice with a small vintage radio collection of my own (plus a 4-tube multi-band regenerative receiver my dad built for me), and I'm slowly upgrading my home audio system to vacuum tubes...you can say that this antique technology I find most interesting to say the least. Thanks to your hard work, I'll be learning a whole lot more so to become a true "bottlehead!" Keep up the good work!

Karl Koogle founder & pres. Artco (karlkrad at gemair dot com) sent the following at 17:11 on 14 September 2003

Antique Radio Tv Collectors of Ohio President says great work and any way I can help anybody please email. Thanks for A great site. Karl

DEREK IRELAND (derek6v6 at hotmail dot com) signed the guestbook at 8:56 on 8 September 2003

RICH MC CLUNG WA6KNW (wa6knw at sbcglobal.net) sent the following on September 5th 2003 at 12:15

WOW, Nice...... Do you have any data on the EEV JAN 5949A. I think it is a HV rectifier. I have a NIBOS one and planning on making it into a lamp.
RICH WA6KNW

ed / w7fnp (muth001 at aol dot com) sent the following on September 4th 2003 at 04:43

good site looks well done.

Robert C. Erwood (erwood2 at juno dot com) sent the following on August 21st at 09:40

very fine web site

Jerry (WHELANJH at BELLATLANTIC.NET) (https://whelanjh.dyndns.org) sent the following on August 18th at 00:45

I really enjoyed looking about at the photographs of the valves and the equipment in which they are used, especially the early ECM gear.

Any plans to publish a book?

Matt Reynolds (mreynolds at electusdistribution dot com dot au) sent the following on August 8th 2003 at 06:48

This is a most excellent site. I will be visiting this site often.
Keep up the good work!

doug in Australia sent the following August 5th 2003 at 08:19

Terrific info nice pictures ,keep up the good work

Richard Wurtzinger (richwurtz at juno.com) sent the following on August 1st 2003 at 02:38

The RF assembly shown in "Radar Equipment with 2X8012 Triodes"
(http://www.tubecollector.org/equipment/8012-radar.htm)

This looks like the RF section of the T39-APQ-9 Countermeasures Transmitter. It was part of a housing that was a 1/2 ATR rack IN width. It covered approximately 500 to 585 MHz . It was noise modulated and put out around 20 watts. It was used to Jam the German Wurzburg Gun laying radars. The noise generator amplifier / modulator was mounted adjacent to this assembly and filled the rest of the housing.

It was tuned by varying the width of the plates between the 8012's. It was popular for conversion to the 420 ham band in the late 40' and early 50's.

Stanislav Slabyhoudek (slava at tesmail.cz) sent the following on 30th June 2006 at 10:37

I have a friend, who collect valves, old radios and TV. Later I send the e-mail address, I don t know it from head.
Stan

Paul Lukas from USA wrote on June 24. 2003, 23:06: E-mail: palika99 at aol.com
--

Nice site - the RL12P35 is a 35W tube, not 50W- Best regards -

A A Bryan from United Kingdom wrote on June 24. 2003, 06:11: E-mail: oldmillgrinder at aol.com
--

At Air Defence Radar Museum, RAF Neatishead there are exhibits of CH and Gee transmitters using CV1571 valves.
There are also exhibits of high power multicavity klystron amplifiers.

GUY SELBY-LOWNDES from United Kingdom wrote on June 5. 2003, 17:03: E-mail: KEYRAWN at AOL.COM
--

I was brought up on valves (tubes). Still love them!

Chuck Schwark, ARCI Web Admin. from USA wrote on May 29. 2003, 13:59: E-mail: caschwark at aol.com
URL: http://www.philcorepairbench.com
--

Hi Jeremy,
I'd like to add a graphical link to the VVM on the next AWA website update.
Is the current "valve-like" logo on your main page the "official" one?
Are there other sizes or styles? Can't hurt to put your best foot forward,
so to speak. :-)
I also see the AWA gave it's permission for you to display our logo on your about me page .
Be sure to use the newest version with the Registered (circled-R) mark from the
AWA website main page.
Cheers,
Chuck

ceylan sari from Turkey wrote on May 22. 2003, 21:41: E-mail: estasmuhendislik at superonline.com.tr
URL: http://www.estaselectronic.com
--

thanks for your light works.i have tubes approximitly a few 100.000.most of them are usa and european brands new and used but tested.some of them russian brands new in original boxes.and i have rare tubes e.g. 5513e,5513b..and.and..sinserelly yours

John Harper from United Kingdom wrote on May 20. 2003, 11:49: E-mail: bombe at jharper.demon.co.uk
URL: http://www.jharper.demon.co.uk/bombe1.htm
--

Any information on a large Thyratron type FG41 would be appreciated

John Harper from United Kingdom signed the guestbook on May 20. 2003, 11:47. E-mail: bombe at jharper.demon.co.uk
URL: http://www.jharper.demon.co.uk/bombe1.htm

malcolm c marshall from United Kingdom wrote on May 12. 2003, 10:13: E-mail: malcolm23 at thefreeinternet.co.uk
--

A great site for those of us that remember valves

John Parkin from Australia wrote on May 10. 2003, 00:39: E-mail: johns_radio at yahoo.com.au
--

great work

kris dean from USA signed the guestbook on May 9. 2003, 23:55. E-mail: kc7ich at yahoo.com

r.rolison from United Kingdom wrote on May 1. 2003, 08:43: E-mail: r.rolison at tesco.net
--

I have a CV143. Does anyone want it before I scrap it. Please use email to reply. PS It is unused, with an application note

mark huffman from USA wrote on April 28. 2003, 18:32: E-mail: marko at vonl.com
--

Looks like a website that may provide some good understanding about tubes. I have a lot of questions about testing tubes. No time now, I'll get back later. Mark

Bill Thomsett from USA wrote on April 28. 2003, 13:47: --

What a fantastic site! Congratulations and keep up the good work.

tom from Germany wrote on April 25. 2003, 08:24: E-mail: tom at die-pkv.de
URL: http://www.vergleich-private-krankenversicherung-iq.de
--

Hello!

Just saying hello to you and your guests!
Best wishes

Paul Barker from United Kingdom wrote on April 20. 2003, 09:26: E-mail: paulr.barker at ntlworld.com
--

Nice to meet you the other day Jeremy, congratulations on your great site
and the contribution it makes to keeping interest in valves alive.

Karl W. Scvhweickardt, Jr. from USA wrote on April 16. 2003, 15:51: E-mail: KarlSnake at aol.com

Photos are fantastic!

Simon Smith from United Kingdom signed the guestbook on April 14. 2003, 21:49. E-mail: si_d_smith at btopenworld.com

Donna L. O'Connor from USA signed the guestbook on April 7. 2003, 19:44. E-mail: DLoc111111 at aol.com

josh from Africa wrote on April 6. 2003, 11:39: E-mail: info at singerdesign.com
URL: http://www.singerdesign.com

Hi there,
Just wanted to say that i really like the layout and design you guys have - its nice and clean!
Keep up the good work!
Cheers,
Josh
Singer Design
http://www.singerdesign.com

Chris from United Kingdom wrote on March 30. 2003, 02:03: E-mail: chrisgibbs at wolston80.freeserve.co.uk

This is a great site. I have only recently become interested in valves since building one of Barry Vyse's guitar amps. I,m still changing components weeks after building it to get the right tone and have learnt a hell of a lot in a few weeks.

sam from USA wrote on March 26. 2003, 01:11: E-mail: inquiry at platinum-diamond.com
URL: http://ww.platinum-diamond.com/
--
Great Site! Lots of useful information.

michael Büll from Germany wrote on March 25. 2003, 08:59: E-mail: mikebuell5 at aol.com
--
Hallo !
Euer Museum der Röhren ist einfach gigantisch. weiter so. Ihr macht Vergangenheit wieder lebendig.
MIKE

OBINNA from Togo wrote on March 22. 2003, 16:15: E-mail: 22MUGU at MUGU.COM
URL: http://www.yahoo.com
--
thanks you guys keep it up.

Trochelmann, Heinz from Germany wrote on March 21. 2003, 10:07: E-mail: dl1lb at freenet.de
--
Hallo Jeremy,
Ive looked into your museum-pages several times and it
helps me to upgrade my knowledge especially in collecting
and identifying WW II valves of British origin. Thank you
very much for the work you investet. Whats about family-
life ??
Best regards, Heinz

John G1WOS from United Kingdom wrote on March 13. 2003, 18:24: E-mail: jbbr35487 at blueyonder.co.uk
--
Really amazing site,enabled me to relate to many "odd" valves I've had or seen.John G1WOS.(Bristol).U/k.

Carlos Y. Shigue from Brazil wrote on March 8. 2003, 01:23: E-mail: cyshigue at demar.faenquil.br
--
Congratulations.
Very useful site, plentiful of info for novices and veterans alike.

Webmaestro from USA wrote on February 25. 2003, 05:02: URL: http://www.metropolis5000.com
--
Very nice website. Please visit my website!!! :)

Hans from Austria wrote on February 19. 2003, 12:37: E-mail: lsclj at htl-ottakring.at
--
why not make an x-ray from that unknown "W18" or "81M", resp.?
Your dentist, maybe, can help
73
Hans
P.S.: Is the country-letter-combination a difficulty ?

chris from Australia wrote on February 18. 2003, 23:12: E-mail: chris at comindico.c0m
URL: http://aix01-syd.comindico.com.au
--
Great!

Brent M Martin from United Kingdom signed the guestbook on February 17. 2003, 17:28. E-mail: brentm at freenetname.co.uk
URL: http://www.brentelectronics.com

John Walker from USA wrote on January 29. 2003, 01:13: E-mail: jhwalker at prodigy.net
--
Well, I've cruised around your website quite a lot and thought it was time to sign the register! I like the way you've organized the tubes and the pictures are excellent! Wish I had the time to get something together like this. Keep up the good work!

FRANCIS from Italy wrote on January 25. 2003, 17:18: E-mail: ik0ire at yahoo.it
--
Please send me two Information of 3TF7 Tube.
1) Equvalent
2) Were to find it
tank you francis

colin smith from United Kingdom signed the guestbook on January 22. 2003, 14:01. E-mail: colin at pepperpost.co.uk

PETER WALKER from United Kingdom wrote on January 20. 2003, 10:57: E-mail: g4plw at btinternet.com
--
I HAVE LITTLE TO ADD. INTERESTED IN VALVES - ALL THE COMMON ONES - IN EX-MILITARY RX AND TX.
IN THE LATE 1960'S AND 1970'S THERE WAS THE OPINION THAT VALVES WERE MORE OR LESS 'NEMP' PROOF (NEMP = NUCLEAR ELECTROMAGNETIC PULSE). IN THESE MORE DANGEROUS TIMES IS THIS A USEFUL THOUGHT?

Art Gilbert from USA wrote on January 20. 2003, 00:27: E-mail: arthur at buffnet.net
--
I am thrilled to be here. AG

Don Helgeson from USA wrote on December 30. 2002, 02:27: E-mail: helgeson at voyager.net
--
Hi There: A great well organized web site that offers a needed public service. Your cutaways are most interesting. I had never seen the inside of a 1630/VT-128(U.S.)
If you ever run into one with no index space between the pins then you might have a rare VT-123 that was used in the very first of the BC-404/SRC-270 radar receivers. One is on display at the Historical Electonics Museum near Baltimore, Maryland in the U.S.of A. Happy New Year, Don Helgeson

Brian Nicholls-Lee from United Kingdom wrote on December 19. 2002, 09:52: E-mail: B.Nicholls-Lee at Kingston.ac.uk
--
Jeremy.
Hi.,
Nice web-site.
I've just come across a CV29.
No box but in good/slightly tarnished condition.
I might sell at the right price-as ever!
Yours
Brian.

Roy from United Kingdom wrote on November 30. 2002, 22:13: E-mail: Roy at TechnicalScientific.com
URL: http://www.TechnicalScientific.com
--
I look at your splendid museum regularly. It really is splendid!
Great way to relax from the voltages and currents of life!
A few of the "data wanted" category - I have a little immediately to hand.
CV4079 is the wire-ended CV4038 with a base.
Low Z for regulated PSUs 500V/120mA. EEV/MOV
CV2225 is the QS1200 regulator 180-225V strike. 150V 8-15mA Reg.
CV5285 is QS1212/CV4048 115V strike 85V 1-10mA Reg.
CV6132 is the BS440 X band 8.5-9.1GHz. Pk 200kW TR Tube.
All the very best!
Regards,
Roy

stoll,martin from Germany wrote on November 15. 2002, 13:08: E-mail: stoll-digital at t-online.de
--
Hallo,
The so called unknown Russian tube : 2 SCH 27
was widely in the USSR (...up to 1970).
It lookes and workes very similar to GERMAN
Wehrmachtsrhren (WWII = Rx 2 P xxx).
In the Russian case: 2 means: 2 Volts heating (as
in german).For technical data see Russians Pages
and: www.b-kainka.de/bastel74.htm or from me!
See also : 12 SCH 1 etc.
regards from wiesbaden/germany
martin stoll

Michael Stott from United Kingdom wrote on November 12. 2002, 00:12: E-mail: mstott7302 at AOL.com
--
Remember proper radio's glow in the dark! G0NEE

Jarmo Puntanen from Finland wrote on November 11. 2002, 07:36: E-mail: ccjapu at uta.fi
URL: http://www.groups.yahoo.com/group/faftubes
--
Thank you for sharing that awesome collection.
I've had the great opportunity to find a good home provided
by Jeremy for some of the old Finnish military stock tubes.
Maintaining a collection of this scale is, really, a lifetime's
work, even more so when there's now also background information
as well as type-specific data available at the click of the mouse!
Best wishes to all,
Jarmo

Wan Joo KIm from Korea wrote on November 8. 2002, 01:21: E-mail: k391kwj at kins.re.kr
--
Wonderful.
Jeremy, really great.
I need to study English more in order to represent my feeling.

Donna O'Connor from USA wrote on October 30. 2002, 14:33: E-mail: DLoc111111 at aol.com
--
Dear Jeremy:
Great collection of unusal vacuum tubes. I appreciate your web page....

JOHN G3ETH from United Kingdom wrote on October 18. 2002, 20:28: E-mail: audjohn.goldberg at lineone.net
--
Very interesting site, too much to take in on this quick first visit,will come again now that I have found it !

Andrew Burge from United Kingdom wrote on September 27. 2002, 21:14: URL: http://www.thermionic.org
--
Great site with lots of interesting stuff, and more being added at a rate.
The guestbook shows the serious interest there is in these great devices.
Keep them glowing!
... Andrew
M0BXT

Tony Canning from Australia wrote on September 25. 2002, 09:26: E-mail: ajcan at ozemail.com.au
--
Very interesting website, although lacking in detail on some of the Valves ...

Graeme Lea from New Zealand wrote on September 20. 2002, 10:28: E-mail: grarich at paradise.net.nz
--
Most Interesting. Will add to favourites.

David Whitton from USA wrote on September 19. 2002, 23:58: E-mail: david_whitton at agilent.com
--
A very interesting site, full of nostalgia for me as I used to work at
the MO Valve CO in Hammersmith. An out of print book which has
some good photos of unusual microwave devices is "Microwave Valves" by Dix and Aldous
including such gems as the "Ophitron" electrostatically focussed BWO.

Mrs. G.Causier from United Kingdom wrote on September 18. 2002, 15:47: E-mail: causierg at lgscc.leics.sch.uk
--
Very interesting and informative website....easy to navigate. I was particularly impressed by the mercury arc rectifier 150/6G.....fab photos!

Peter Tibbitts from United Kingdom signed the guestbook on September 10. 2002, 12:46. E-mail: ptibbitt at ford.com

Peter Knight from United Kingdom wrote on September 8. 2002, 14:20: E-mail: stave.knight at virgin.net
--
An excellent and useful site, it really takes me back to
the "good old days".

Ralph Holvast from Australia wrote on September 6. 2002, 11:10: E-mail: elmpine at norex.com.au
--
Very comprehensive and useful site

Andrew Wylie from United Kingdom wrote on August 24. 2002, 23:42: E-mail: Andrew_Wylie at compuserve.com
URL: http://ourpages.compuserve.com/homepages/Andrew_Wylie
--
excellent site - great content well presented.
Andrew "Mister Transistor" Wylie

Peter Webster from United Kingdom wrote on August 5. 2002, 20:28: E-mail: peter_f_webster at hotmail.com
--
Excellent site, congratulations!
I have a small valve collection, mainly battery valves.
I am also interested in WW11 radio and radar so your site is great to be able to see pictures of some of the valves.
Best regards
Peter

Robert Borchert from USA wrote on August 5. 2002, 10:30: E-mail: rjborchert at sbcglobal.net
--
I have been fascinated with valves since building my first radio at age 11, employing a 1T4 miniature tube.
Years ago, I was fortunate to visit the interior of an RCA AM radio transmitter, a beautiful room
fabricated in stainless steel, proudly emblazoned with a "Radio Corporation of America" logo, also in steel, on the outside wall.
Within the confines of this room were some of the largest and most beautiful valves I have ever seen, standing
over 500mm tall.

Charles T. Heggen from USA signed the guestbook on July 28. 2002, 08:57. E-mail: charlesheggen at msn.com

Don A Marvin from Canada wrote on July 25. 2002, 15:47: E-mail: rhesch at mnsi.net
--
Hi
Your pictures of large valves and TWT's bring back some fond memories.

Ian Smith from United Kingdom wrote on July 25. 2002, 12:43: E-mail: iancrsmith at tw13.fslife.co.uk
--
Fantastic site for lovers of all things valve, like myself.
Pride of place in my small collection is a 'Nevitron R51G.8238'
mercury arc rectifier, about the size of a wine bottle, with fantastic cooling fins on base.
also a mazda 8355 arc rectifier, smaller but looks fantastic.
Would love to find old high power transmitting valve, but have'nt come across one at a reasonable price yet !
If you would like a photo of the Nevitron, please e-mail me, and I would be happy to oblige.
Site added to my favourites list, many thanks.
Best Wishes
Ian. G6RHV
look forward to receiving the Telefunken RL12P35, bought on ebay.

Parveen from India wrote on July 25. 2002, 10:14: E-mail: parveen009 at rediffmail.com
--
I am in teh need of Magnetron (4J50A) 20 No's
Can anybody quote the same
Reply at parveen009@rediffmail.com

Russ Gates from USA wrote on July 24. 2002, 01:37: E-mail: rgates2 at aol.com
--
You have a very nice collection! I have just started collecting myself and just aquired a Taylor C6J/KF thyratron. Do you have any suggestions as to where I could find a data sheet?

giuseppe dia from Italy wrote on July 12. 2002, 13:03: E-mail: dia at dns.unife.it
--
I beg your pardon for my bad english. My best compliments, you have a very nice site!
I 'm a vacuum tube collector (although my collection is smaller than yours)
I have some unknown tubes and i would send you some photos of them. If it is possible.
Tank you
Best regards
Giuseppe

Martin Ackroyd from United Kingdom wrote on June 30. 2002, 14:09: E-mail: martin at ackroyd.me.uk
--
Thank you for making this fascinating information available.
I have a few oddball valves and it is interesting to learn more
about them and what they were used for. And many are new to me and
very interesting to see.
Suggestion: In some cases, a "three-quarter" view of a valve
would be more informative than a "full frontal". Acorns are an
example, where the number of pins and their angles are not always
obvious.
Cheers,
Martin

Eduardo Ramadori from Argentina wrote on June 20. 2002, 14:13: E-mail: earamado at criba.edu.ar
--
Very nice site. Excelent information source

Pere Vidal from Spain wrote on June 17. 2002, 23:30: E-mail: PONSTGN at teleline.es
--
Every time I visit a Ham/merca Radio, try to collect some transmitting tubes, for my small display at home. In a few of them, I had installed inside a wooden foot, a transformer capable to light the filament, and so make feel the warmth of the valve.
I could identify some valves, thanks to your virtual museum.
Best 73 de Pere - EA3HK

philip mccoy from USA wrote on May 31. 2002, 18:37: E-mail: dgnova at erols.com
URL: http://www.qsl.net/w3sak
--
Very nice site.

John Panton from Germany wrote on May 31. 2002, 07:30: E-mail: jonpan at addcom.de
--
Thanks for a very interesting, enjoyable site.
I have one unusual valve with the marking
Sie 1000/2,5/15g
The Sie stands for Siemens, the comma corresponds
to our point, the valve is shaped like a hot-air balloon.
Any ideas?
John

Martin Whybrow from United Kingdom wrote on May 30. 2002, 00:19: E-mail: martin.whybrow at ntlworld.com
--
Great site, have spent hours looking at this huge collection.
First visited the site trying to identify a valve that I've
had for 18 years, a CV2283 (V243A), didn't find it on the
site but found several similar devices amongst the Heil
tubes section, the model number also sits in the middle of
the models you list.
Great work, keep it up!

Steve Lane from United Kingdom wrote on May 28. 2002, 13:54: E-mail: sstevelp at aol.com
--
You have a great website.Thanks for providing it.
Steve

IOANIS from Greece wrote on May 20. 2002, 19:10: E-mail: gianis-33 at mailbox.gr
--
Nice collection! Very nice site! Valves , tubes,valvulas, radyo lambasi , for ever!!

Ricardo Monteiro from Brazil wrote on May 16. 2002, 14:29: E-mail: monteiro.riso at originet.com.br
--
Great to see someone so dedicated to a hobby!

Warren Weber from USA wrote on May 15. 2002, 15:10: E-mail: hiview at worldnet.att.net
--
Enjoyed looking at your site. I have some miniature tubes (valves) that you do not show. Would you like to have them to add to site? They are #6896, CK526AX, CK522AX, CK6088. Where are you located? Warren

Bob Lyon from USA wrote on May 14. 2002, 01:53: E-mail: btlyon at comcast.net
--
Very nice site. I'll definitely be back for more visits.

Brian from United Kingdom wrote on May 8. 2002, 09:56: E-mail: m1dmr at thersgb.net
URL: http://www.maybri.co.uk
--
Very good info on this site

Joe Anderson from USA wrote on May 8. 2002, 00:16: E-mail: joeanderson at nts-online.net
--
Enjoyed the site.

Rudolf Reimann from Germany wrote on May 7. 2002, 13:21: E-mail: rudolf.reimann at rsd.rohde-schwarz.com
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I just had the opportunity to get a box full of old valves. And where did I find the most information ? Here in this museum.
This is really very nice and informative. Congratulations !

Trochelmann, Heinz from Germany wrote on April 23. 2002, 19:39: E-mail: dl1lb at freenet.de
--
Thanks for the oppotunity to see very nice and interesting
valve pictures.
Heinz, DL1LB

jonstyles from United Kingdom wrote on April 18. 2002, 14:36: E-mail: jon.styles at ntlworld.com
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beautiful, a work of love and art !

Kovacs Laszlo from Slovakia wrote on April 11. 2002, 15:46: E-mail: smiss_l at freemail.hu
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Hi!I'm glad that I've found your web site.
I'm looking for tubes for my hybrid amplifier.You know,that
I come from Slovakia.Our manufacturer Tesla produced some
tubes a few years ago.I'm triing to find equivavalents,
because the schematics I've got use almost everywhere
British and American tubes.I hope I'll find some tubes what
I need here.If you were so kind could you please send me
some schematics (if you've got) using the ECC83 triode?
Thank you.All the best to you!Good bye!

R E Jessemey from United Kingdom wrote on April 11. 2002, 15:29: E-mail: G3uog at aol.com
URL: http://www.relaysettings.com
--
Just signing in, contemplating a new branch of the radio hobby that won't have the neighbours complaining.

Mike Couture from USA wrote on April 6. 2002, 05:03: E-mail: mike at mgte.com
URL: http://www.mgte.com
--
Very nice layout, with details, and EXCELLENT pictures. Looks like
I'll have dig through my old 'stuff' and see what I have. I know
I have an old RCA 6099 somewhere. (Grid storage tube) I'll take
some pictures and pass them along. Keep up the good work.
Best Regards,
Mike Couture
MG Electronics

James I Cook from United Kingdom wrote on March 20. 2002, 15:54: --
This is great I can see that I have only sctatched the surface. I have a small collection of around 50 prewar

Gordon, G3XEW from United Kingdom wrote on March 6. 2002, 23:37: E-mail: gordon at g3xew.fsnet.co.uk
URL: http://www.g3xew.fsnet.co.uk
--
What a great site! Wonderful seeing all those beautiful valves - I can just imagine the warmth! Must check out my collection as I'm sure I have an RK28 that's not on your list. Will let you know.
Regards,
Gordon

Bernie Crawford from USA wrote on March 5. 2002, 01:15: E-mail: oldpa2 at attbi.com
--
I really enjoyed viewing your gallery. Nice Collection! I was hoping to find a certain tube but no success.Thanks for the tour.

Ulf Huelsenbusch DK2RV from Germany wrote on February 27. 2002, 11:34: E-mail: huebu at t-online.de
URL: http://iabg.de
--
Hello,
a very nice and interesting site!
We are a group of radio amateurs in Munich and we plan to
create also a virtual tube museum.
My friends have a big collection of tubes and they know a
lot of the history and application (WW2, Wuerzburg, US Radars etc..)
So it would be very interesting to change information.
The above mentioned address is where I work.
Best regards
Ulf Huelsenbusch

Martin Francis from Canada wrote on February 1. 2002, 02:16: E-mail: martin at classaxe.com
URL: http://www.classaxe.com/wireless/data/
--
Hi there!
Very nice site, I particularly like the search feature.
Best wishes,
Martin Francis

Mark Frank from USA wrote on January 29. 2002, 22:19: E-mail: mfrank1 at rcnchicago.com
URL: http://www.geocities.com/mfrank1_99/
--
New to collecting tubes. Interested in purchase of large, scientific, industrial tubes.

Peter G8BBZ from United Kingdom wrote on January 29. 2002, 15:41: E-mail: peter.barker at albionradio.com
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You solved a mystery for me - the origins and function of the Heil tube. My interest stems from the CV288's which are used as both Tx output and RxLO in SR B70 - an early 60's UK Army Radio Relay equipment operating around 4.6-4.8GHz. I am interested in military radio relay.
If you are still collecting, I have some big valves which I can check out and let you know the type numbers - let me know.
Thanks Peter

John Kaesehagen from Australia wrote on January 17. 2002, 12:10: E-mail: yendor3 at bigpond.com
--
Thanks for such a wonderful site Jeremy.
With an interest in radar and WW2 valve development I never tire of revisiting your clusters of 'thumbs'.
And each visit is usually rewarded with new additions. Find a few more for the 'unknown' page!

Barrie Mellor from United Kingdom wrote on December 30. 2001, 01:15: E-mail: mellor at edotek.co.uk
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Things of beauty....joy for ever......valves!
Barrie G4CQJ

JACK IVERSON from USA wrote on December 15. 2001, 20:38: E-mail: jackiv at juno.com
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THIS IS A VERY IMPRESSIVE DISPLAY, THANKS FOR THE VIEW.
JACK HAPPY HOLIDAYS

Agust U Sigurdsson from Iceland wrote on December 7. 2001, 23:35: E-mail: agustus at islandia.is
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I got a pleasant shot of nostalgia when browsing your web.
I love the excellent pictures (less the 9 volt battery).
More written text would not harm, for instance what is a "Catkin" ?

Nice work - thanks.
Agust

Bill Wagner from USA wrote on December 6. 2001, 13:51: E-mail: bill at ece.ufl.edu
--
I enjoy your web site SO much! How do you get the time to do all that work? I retire soon and will try some serious organizing, will take me many hours to organize the tubes I have now. You have such a good spread of types. I grew up with tubes and I still like to build tube projects.
Thanks for helping all of us!

martin Thomson from United Kingdom wrote on December 3. 2001, 13:28: E-mail: martin.thomson at tmd.co.uk
--
I have worked on valve typre for 30+ years including CV 6114, VX 8569 , JP-802B etc etc mostly Backward wave oscillatores, magnetrons, travelling wave tubes and reflex klystrons
Currently I am attempting to get a datasheet for an Old Litton magnetron Type L-3028D or CV 9200 (equilavent)and wonder if you could help with either a picture or data sheet.
Thanks
Martin Thomson

Lester from USA wrote on December 2. 2001, 21:56: --
The unknown looks like an audio pickup tube from a theater
projector. A light beam shines from the opposite side
through the film. "S" probably stands for sound.

Brian P. from USA wrote on November 30. 2001, 03:52: --
Well done, Jeremy. Excellent content, layout. You've
some VERY interesting specimens... parametric amplifier!?!
What a BEAST. I can only imagine the cost of manufacture...
and what it would look like under CLOSE inspection.
I collect tub...umm...VALVES myself (as well as other
'vintage' electronics). I very much appreciate the time
You've taken to share with us all your wonderful
collection.
Best Regards,
Brian P.

Herman van Dierendonck from Netherlands wrote on November 27. 2001, 20:41: E-mail: herman.vandierendonck at wanadoo.nl
--
I came up your Valve Collection because I am at the moment building
a NIXIE displayed digital clock. The biggest problem I've come up
to is finding the digital drivers for the NIXIE tubes. That's
why I'm searching the internet for data. The Valve Collection is a very interesting site
especially for "retro technology" enthousiasts like myself !
Thanks, Herman

Jack Segal from USA wrote on November 22. 2001, 16:39: E-mail: jaks at wight365.net
--
Lavish & comprehensive site.

Chuck Kuecker from USA wrote on November 22. 2001, 02:47: E-mail: ckuecker at ckent.org
URL: http://www.ckent.org
--
Neat site! Someday, i must organize my collection...

Paul Wittke from Canada wrote on November 3. 2001, 10:54: E-mail: wittkep at post.queensu.ca
URL: http://www.queensu.ca
--
Very interesting site. Looking for a tube - the carcinotron, produced by CSF France under development by the UK radar people,
used to potentially jam radars in the mid 50's.

Bill Ducharme from Yugoslavia wrote on October 25. 2001, 13:22: E-mail: billd at panax.com
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Hi Jeremy, Hope you can use or enjoy the Ge Tubes.I have some unusual ones also,I will sent some pictures when I get time. Also may have info on your unknows or a few??? Nice site will look more as I have time. Bill D.

Ewan from United Kingdom wrote on October 22. 2001, 18:05: E-mail: ewan.smart at ntlworld.com
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THE most interesting website, ahh they don't make things
like they used to!

Javier Ruiz from Spain signed the guestbook on October 21. 2001, 13:45. E-mail: audiov at wanadoo.es

Iwan Danilewsky from Brazil wrote on October 17. 2001, 03:35: E-mail: iwan at osite.com.br
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Hello!
I need some information about Ignitron valve, GL 7703 and explanatin how it work.
Best regards
Iwan

Phil from USA wrote on October 13. 2001, 21:51: E-mail: papierp at bellatlantic.net
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I desire to purchase upto 4 nos xf1 Mullard EL34's

Ian Ewart from United Kingdom wrote on October 10. 2001, 12:27: E-mail: alexs2 at hotmail.com
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What a superb site!.....all these wonderful tubes complete with pictures....congratulations on a great site

Jeffry Aziz from Malaysia signed the guestbook on October 2. 2001, 09:18. E-mail: sequ_ins at tm.net.my

Gilles Masson ve2amn from Canada wrote on September 24. 2001, 04:13: E-mail: g..masson at sympatico.ca
--
Hi!!! I came to your site looking for info. about a tube,
and stayed over an hour, liking every minute of it.
This is quite a site and I'll be back for more.
Thank you, and 73, de Gilles

Danny Biando from USA signed the guestbook on September 9. 2001, 08:03. E-mail: dannybiando at dannyb.com

Tony from United Kingdom wrote on September 7. 2001, 21:20: --

Greetings!
If only I had met this site a few weeks ago, before I
started dumping, in the tip, relics of my early hobby!
I hope I have still some bits; I know there`s a VCR97
left from my early home built oscilloscope.
Better late than never,
Cheers, T

Andy Dailey from United Kingdom signed the guestbook on August 28. 2001, 19:30. E-mail: a.j.dailey at talk21.com

H.-T. Schmidt from Germany wrote on August 20. 2001, 22:42: E-mail: htschmidt at gmx.de
URL: http://www.hts.d4f.de
--
Hi Jeremy,
you have a very nice homepage. Very interesting are the many early radar tubes.
I hope to see a lot of more pages in the future.
Very best regards, Hans-Thomas

John Gumb from United Kingdom wrote on July 20. 2001, 01:23: E-mail: john at gumb.org
--
Jeremy,
BTW - nice site !
J

John Gumb from United Kingdom wrote on July 20. 2001, 01:20: E-mail: john at gumb.org
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Hi,
I have a mullard RR3-1250A. This looks like a very high voltage
rectifier. You wouldn't happend to have the spec for it
would you ?
duncanamps.com doesn't list it.
Cheers,
John

Chris from United Kingdom wrote on July 18. 2001, 18:24: E-mail: Chris.colebrook at ntlworld.com
--
Hi
Very nice site. I just love old tubes and hate to think of the large quantity I scrapped some years ago
I will browse here often
Kind regards
Chris

Malcolm from United Kingdom wrote on July 3. 2001, 23:34: E-mail: collectradio at aol.com
--
This is a great site and now my third visit. Highly reccomended to anyone interested in vintage Tubes/Valves ect.

Dylan Windom from USA wrote on July 3. 2001, 05:00: E-mail: dylan_windom at hotmail.com
--
I found this site a long time ago, but never signed the guestbook until now. I think this is a very interesting site, and I like how it is updated almost all the time. I have just began collecting old radio tubes/valves myself, and I have a few really nice ones so far. My best tube so far is an old Philips type E from Holland. Thanks for the great site!

Ye OLDe TRANSMITING TUBE MUSEUM from USA wrote on July 2. 2001, 00:57: E-mail: alk6dia at gte.net
URL: http://www.tubecollectors.org
--
Hello Everyone
All of you tube collectors that pass through thr Redwood Country here in Northern California drop in and see the old bottles (tubes) we have here.
Also, the Tube Collectors Association (see URL) is a great organization to keep you abreast of whats going in this great hobby.
Happy tube collecting. Al Jones

David Stout from USA signed the guestbook on June 30. 2001, 19:35. E-mail: damarst at prodigy.net

Ray Chase from USA wrote on June 28. 2001, 22:53: E-mail: enrpnr at erols.com
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Great virtual museum, and it loads fast. Superb organization, a pleasure to review.
I also collect radar and other "weird" tubes, maybe we'll find something to swap along the line.
Ray Chase

Bob from Canada wrote on June 28. 2001, 21:20: E-mail: bobc at tallships.ca
URL: http://dess.tallships.ca/~bobc/
--
Cool collection!
Just getting into tube collecting and trying to learn how to restore older tube radios.
These kind of sites keep the incentive going.
Regards,
Bob, VE1ARN

Bob Sutherland from United Kingdom wrote on June 28. 2001, 18:19: E-mail: Vipers at ntlworld.com
--
I don't know where you get all your valves from Jeremy,
I regularly see something interesting.Soon I hope to be
launching a valve site, as I am a keen collector myself.
My speciality seems to have become thyratrons.Good luck
with your site.

Richard Green from United Kingdom wrote on April 27. 2001, 21:17: E-mail: richard at comms188.freeserve.co.uk
--
I like valves as well and have a small collection, great to look at

Paul de Raymond Leclercq from United Kingdom wrote on April 24. 2001, 15:22: E-mail: paul at 13E1.com
--
So sorry! I forgot to compliment you on your most interesting website.

Paul de Raymond Leclercq from United Kingdom wrote on April 24. 2001, 14:56: E-mail: paul at 13E1.com
--
Greetings.
I am not strictly-speaking, a collector although I do have a few oddballs on display (if you call the top of a loudspeaker cabinet "display"!). My main interest is valves for hi-fi. So far I have built five amplifiers (two are dismantled). Valves used include A2134, A2293, 3A/167M, 6AN4, 6BN4, EC86, 6SN7, 6BX7, E182CC, 6922, 6350, 6463, EC8010, 417A, EL360, 12E1, 13E1, 6550, 6528 and 813. Prototypes have used E55L, E810F, E180F and probably a number of others!
Sadly my flat now appears to be a warehouse!
Best wishes
Paul Leclercq

rydel charles from France wrote on March 29. 2001, 15:26: E-mail: rydel_charles at yahoo.com
--
your uknown LDR was done by RTC and/or mazda. I remember
that I have seen it in here boocklet maybe 30/40 years ago !
Charles
PS Nice collection !!!

Matthew P.Cartmell from United Kingdom wrote on March 29. 2001, 13:51: E-mail: m.cartmell at mech.gla.ac.uk
URL: http://www.mech.gla.ac.uk/Research/Dynamics/
--
I became interested in electrical things at about 3 or 4
years old and did many of the things that Jeremy talks about
in his introductory paragraph. I don't have much time to
devote to obsolete electronics these days but still have a
huge amount of affection for valves, valve radios, and
amplifiers. I have a lot of valves but haven't got round to
classifying them yet. Most are in their original boxes
(mainly B9A based components). My 'best' valves are a
matched pair of 807s and a PM1 (the latter in its original
box). Nice site. Thanks.

dave miles from USA wrote on February 27. 2001, 03:02: E-mail: daverain at ptd.net
--
very complete informative site!

dean thatcher from USA wrote on February 10. 2001, 23:39: E-mail: thatcher at mddc.com
URL: http://www.iavalley.cc.ia.us/~thatcher/
--
Great site..Brought back lots of memories...I will have to
dig out my 4 foot long transmitter tube from 1930's

Yes from Guatemala wrote on February 6. 2001, 17:07: --
What is this valve? I think it is very strange. It is not good for hobby. Perhaps get out more?

ALEX kOPPEN from Australia wrote on January 26. 2001, 20:57: E-mail: eugenekoppen at mailexcite.com
--
Great site, easy to use and friendly, thanks alex

Leon Crampin from United Kingdom wrote on January 11. 2001, 23:56: E-mail: leoncrampin at hotmail.com
--
Jeremy, sorry to use guestbook for an equiry, but having trouble with outlook express. Can you help with Mazda 10C1 and 10F18 also Mullard UCC85? Please give prices and UK postage. Regards, Leon.

Leon Crampin from United Kingdom wrote on January 11. 2001, 23:17: E-mail: leoncrampin at hotmail.com
--
Jeremy, Thanks for a really interesting site. I restore Murphy radios as a hobby, and some of the early Mazdz valves can be difficult to find. This site should help a great deal. Regards, Leon.

Robin Cooper from United Kingdom wrote on January 6. 2001, 20:47: E-mail: Robin_Cooper at Talk21.com
--
A very interesting website. I myself am a Valve
(NOT TUBE) collector and a member of the BVWS.

Tony Jones from United Kingdom wrote on December 12. 2000, 17:13: --
Nice site, brings back a lot of memories

Terry Corbyn from United Kingdom wrote on October 14. 2000, 16:39: E-mail: rubberbiker at ecneret.wordonline.co.uk
--
This may not be relevant, but I'm having a clearout of my flat here in London. I'm an electronic engineer, and as a kid repaired radios & TV's for pocket money. I have a complete set of "Radio and Television Servicing@ yearbooks from 1945-1986 with no missing editions, in very good condition. I'm looking to sell them, but only as a complete set. I have no idea as to their value, but I think 750 pounds is a good starting point. More important, I would like them to go to a good home. Email me or phone me on 0207 388 3779 , or 07720 311 698

HEMANT AND COMPANY from India wrote on October 12. 2000, 15:23: E-mail: hemantco at vsnl.net
--
please send your priselist for thyratron tube xg5-500 or its
equivalent tubes.also send your postal address.

David Hoover from USA signed the guestbook on October 11. 2000, 05:01. E-mail: dayo2 at webtv.net

Mario Catena from Italy wrote on October 9. 2000, 13:34: E-mail: mario.catena at iname.com
--
Very nice job on this site. I'm a tube collector (anyway my collection
is not as big as the yours) and I have some unknown tubes
can I send you some photos of them ?.
Ciao
Mario

adam beaumont from Norway wrote on October 4. 2000, 18:52: E-mail: a at a-q.co.uk
URL: http://a-q.co.uk/
--
Siten-din er s godt!
men jeg kan finne ikke fiskene...!
Adam

E.Logaridis from Greece wrote on September 26. 2000, 10:49: --
'Was very interested to see the tubes in your collection.
I intent on keeping in touch..
All the Best.

This file was last modified 17:21:21, Friday April 10, 2009