[ARC5] 829B Transmitter

[Kenneth G. Gordon]

On 13 Dec 2013 at 21:42, Leslie Smith wrote:

>   Hi Ken,
>   What, pray tell, is a "Jones"  transmitter?
>   Is it something that Davey Jones keeps in his locker?

Hi, Les:

No, Frank Jones was a fellow who wrote handbooks and beginners' articles 
in the late 1930s which were quite popular. He also "pioneered" very simple 
but effective receiver circuits.

His favorite circuit for beginners' transmitters was a push-pull dual-triode 
crystal-oscillator. He used a 53 or a 6A6 dual-triode tube.

Here is a link to a short missive on it, with a link to the schematic:

http://www.w7ekb.com/glowbugs/tx/jonesppxtal.htm

The circuit is unusually "easy" on crystals.

I have not followed this web-site submission up yet. I can send you the 
schematic of the 829B rig I built for a professor if you would like to see it.

Using a power supply with about 250 VDC output, I got 12 watts out of the 
rig, at 20 MHz.

If you "step back" to this URL:

http://www.w7ekb.com/glowbugs/tx/transmitters.html

you will find other interesting transmitter circuits...at least they are of interest 
to me, anyway. That single-tube 813 crystal oscillator transmitter especially 
interests me. It provides 150 watts output.

Ken W7EKB