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Sylvania 1B40 TR tube, for 1075 to 1095MHz with an external cavity. 1kW rated. It measures 38x20mm (12mm across glass).

1B40 end view

 

 

 

 

 .1B40
1B40 box
Thanks to John Kaesehagen for information on this device

This file was last modified 15:35:56, Saturday November 12, 2011