Thread: Home brew TRF
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Old 2nd Nov 2005, 2:07 pm   #5
Hunts smoothing bomb
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Join Date: Oct 2005
Location: Wimborne, Dorset, UK.
Posts: 1,407
Default Re: Home brew TRF

Hi everyone,

Thanks for your help, I had a sneaky suspicion it would be the diodes, I just wanted to double check.
For those interested the set is of very basic design. I havn't done alot of constructing so thought I'd start with something simple. The design is based on bits and pieces I have picked up in books along the way. It is a single tuned circuit type with reaction coil. The reaction is controled via altering the supply voltage of valve 1's anode which is a 6j5 triode this output is then fed into another 6j5 (audio amp) and then is past to a 6V6GT (audio output) I have also incorporated a 5 step tone control using a 5 way wafer switch which simply connects different value caps from the 6V6's anode to chassis it all works quite well. I would have used a valve rectifier but this set I wanted to make as small as possible so there is no room on the chassis, I am trying to recreate the small midget set look, this is why I have used octal valves.
I will post some pictures soon if anyone is interested.

Bye everyone

Lee
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