[Johnson] Viking II

[Roy Morgan]

On May 12, 2014, at 4:20 PM, Brian Burns <brian at lessonsinlutherie.com> wrote:

> ...The temptation
> is to part out the Viking II for the transformers etc., but I just can't
> bring myself to start tearing into it. Are Viking II's so common that it
> doesn't matter, or would parting it out be sacrilegious?

Seems to me that the transmitter would or could run again.  It might convert some young person to tube radios.

Here is a suggestion:

Modify the thing into a low power exciter: take out one 6146 and the modulator tubes (Does it even do AM!), and rework the final to run in linear, class A mode.  This is what TMC did in their medium size transmitters and 200 mW exciters.  Northern Radio used 2E26’s in their exciters for the same purpose.  You could just plug in a 2E26 with little circuit changes.

The final circuit in the Vikings is quite versatile: continuous coverage with a roller inductor.  (That may need to be re-glued back into working order.)

If you have the project running by winter, it will heat the shack a bit.

Roy

Roy Morgan
RoyMorgan at alum.mit.edu
K1LKY Since 1958