STC V271C/3M floating drift
tube klystron
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This klystron measures
108x135x47mm overall and has an 8 pin base. |
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| Pin |
Function |
| 1 |
Heater |
| 2 |
Cathode |
| 3 |
Screen grid |
| 4 |
Anode |
| 5 |
Drift tube |
| 6 |
Control grid |
| 7 |
Resonator |
| 8 |
Heater |
|
| Heater voltage |
6.3V |
| Heater current |
250mA |
| Max anode voltage |
600V |
| Max resonator voltage |
600V |
| Max drift tube voltage
with respect to resonator |
200V |
| Max screen voltage |
400V |
| Max anode dissipation |
27W |
| Max resonator dissipation |
18W |
| Max drift tube dissipation |
3W |
| Max screen dissipation |
2W |
| Max total dissipation
for all electrodes except heater |
40W |
| Max cathode current |
65mA |
| Max mica window seal temperature |
130C |
| Max temperature of any
other part of envelope |
300C |
Typical operating conditions
for operation in Mode 15 (3.75 cycles) and Mode 19 (4.75 cycles). The
Mode numbers are the number of quarter periods of oscillation occupied
by electrons in transit through the drift space.
Mode 15 frequency modulated
oscillator 6850 to 7350MHz
| Anode voltage |
550V |
| Resonator voltage |
530V |
| Grid voltage |
-50V |
| Drift tube voltage |
395 to 505V |
| Screen voltage, approx.,
to give cathode current of 60mA and anode current of 30 to 40mA |
180V |
| Min. power output |
800mW |
| Electronic tuning between
half power points |
+/-8.5MHz |
| Modulation sensitivity
when loaded for max power |
250 to 450kHz/V |
Mode 19 oscillator 6850 to
7350MHz
| Anode voltage |
370V |
| Resonator voltage |
350V |
| Grid voltage |
-50V |
| Drift tube voltage |
240 to 310V |
| Screen voltage, approx.,
to give cathode current of 45mA and anode current of 22 to 30mA |
120V |
| Min power output |
200mW |
| Electronic tuning between
half power points |
+/-6MHz |
| Modulation sensitivity
when loaded for max power |
450 to 650kHz/V |
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| The klystron has two faces,
one marked OUTPUT, the other marked TUNER. |
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The picture above shows the
inside of the 'output' side of the klystron. The one below shows that
of the 'tuner' side, which is marked 18JH and 40JG.
|
 Side
view showing the magnet.
Above are pictures of each
side of the device, and below is a picture of the bottom.
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