[Collins] T-195 Transmitter

[Gerald]

On Tue, 2005-05-10 at 15:38 -0400, flood at Krohne.com wrote:
> Greetings,
> 
> I am the new caretaker of a Collins T-195 transmitter. I was wondering if 
> there is a reflector specifically for this beast somewhere.  I hope to get 
> it up and running with one of my R-392 receivers.  If such a list is 
> available or if there is a secret society for T-195 owners, please reply 
> directly to me.
> 
> John Flood KB1FQG

I've tested a T-195 and set one up for use by a nearby ham, courtesy of
Army MARS. Its been a while.

You need a STURDY 24 volt power supply. Some vintages use a couple
dynamotors for high voltage DC and there are a couple noisy fans to hide
the whine of the dynamotors. Some vintages use electronic DC-DC
converters made in the shapes of the dynamotors. A 25 amp supply at 24
volts isn't overkill.

The automatic antenna tuner will load a 5' test lead at 1.8 MHz. Likely
it was designed to feed an 8 or 10' whip over the tuning range.

The CW key line takes more than a few milliamps.

Its a working transmitter if you can power it.

I don't have it or the manuals though I think there might an R-392
schematic in the drawer yet. I used the 392 on the air, just tested the
T-195.

I like my new FT-857 that will cover more than twice the ham bands of
the T-195 and it runs on 12 volts 22 amps (on HF) but it has no built in
antenna tuner. It receives too. Works SSB too as well as CW and AM. 

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer