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Tube PA for FM

S

Studio1

I'm looking for a small tube based amplifier that I can use in conjunction with a 7 watt PLL exciter. This is a project to show the old working with the new - so a kit would be good as I don't have a lot of time to construct.
Something between 5 - 50 watts would be ideal. I've Googled it and come up with a 45 watt design but I need something I can throw together, not something I have to spend the next 6 months building.

Any suggestions?
 
Do a search based on the ubiquitous 6146 tube. That lovely device has been used in more driver stages, ham home-brews, and kit-type amps that you can shake a stick at. A single 6146, loaded correctly, should put out 12w or so.
-D
 
Better yet, find someone who kept the parts when they upgraded an early three bay Collins or Continental transmitter to the solid state driver. Leave both tubes in (4CX250Bs) and it oughta make 250 Watts or so off 7 to ten Watts of drive. Block off one socket, and get a hundred or so. You'll need to build a 2KV plate supply unless you have three phase power available... if you do, get the transformer and filter cap with it. YOu'll need tobuild an output network which will attenuate harmonics and match it down to 50 Ohms from the 2K or so it is designed to load into.
 
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