"Eisboch" wrote in message
...


Here's the one I used to play with:

http://www.geocities.com/technician4/ronw1.jpg

Eisboch


The one in the link (above) is an old AN/FRT-40 used by the Navy
primarily at shore based naval transmitter sites from late 40's. They
were phased out by the mid 70's.

The "40" was a 50kw version of this, an An/FRT-39. It was used both at
shore stations and aboard ship.

The left side rack contained the modulation mode select (CW, FSK, Voice,
and the output mode .... carrier or SSB. It had an "exciter" capable of
1000 watts used to drive the right hand side, 10kw power amp. The exciter
could also be used by itself, hooked to an antenna in emergencies. We
used to have a lot of fun screwing around with that.

http://jproc.ca/rrp/coverdale_gpt10k.gif

A FRT-40 added an additional power output section to raise the output to
50KW

I can't remember anymore. Is it "peak the grid, dip the plate" or the
other way around?


Eisboch


Here's one I used at the Marine MARS station on Okinawa fro RTTY traffic..

http://www.collinsradio.org/html/kw-1.html


We also had several Collins original *S* Line setups. We had a 600' per leg
rhombic pointed at Southern California, Camp Pendleton. They were are main
outlet for RTTY traffic.

BTW, don't peak the plate, you'll be replacing finals. 8)