[Boatanchors] 1930's era cw transmitter

[Roger Ruszkowski]

Dave,


The Knight T-50(kit). The T-50 was CW only, 80-10 meter kit. A 6AG7 driving 
  an 807 final @ 50 watts input. It is a good design that has
stood the test of time.

A popular early design done as a 1950's kit out of Chicago.

The 807 will do 50 /60 watts CW. It is a beam power tube.

I could see you running four tubes One as an AM modulated stage.
A second as a phase shift driver. With a push pull final pair getting you a
nice 100 watt AM signal.

Just so you can run 1930 style big glass bottles I would run a 6SN7 dual
triode as the oscillator and buffer stage. This will also let you run
with a low power external / internal  VFO or small crystals.

Also run some octal gas regulator tubes for the voltage regulation.
Just for the cool look and keeping in style.

You would like to use real transmitter tubes in the final 
and not just the most robust old TV sweep tubes as used in a lot of
CB radios back in the day. 

Antique radio supply will have the tube sockets for you also.

This is a one off once in a life project. Put the money in for the
few odd parts and build a project you can treasure.

You may need to build it more than once.

Do not go mini on it. Let it be a big box. Transmitters are not the 
place for small.

I would cop out and solid state high voltage rectifiers.
Fake them under an octal socket with a dummy tube.
Fake them in a metal can on an octal tube socket as a 
an octal plug in tube.
 

Roger AI4NI