Hello-
    Mil. manual, not sure if it came out of mil. this way or not, but is a 
combination of several manuals-
        TM 11-5820-358-210    R-390A
        TM 11-5820-358-20      R-390A
        TM 11-5820-358-35      R-390A   Maint. Manual field and depot
        CV-116 FSK conv.
        TO 31R2-2GRC26-81   GRC-26D Radio Set
        Plus many smaller manuals too numerous to mention, concerning field and 
shelter set-ups for GRC-26D system.  About 2-1/2" thick, about 10 pounds 
weight, good cond. 30.00 plus shipping. Thanks, WA5THJ
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Jim Wilhite wrote:

> John, are we allowed use of 40 meters on a secondary basis?  Wasn't
> this one of the reasons the FCC under Johnson reduced output power to
> 1500 PEP rather than 2 KW PEP.  That showed the overseas broadcasters
> we were cooperating.
>
> I know many years ago they complained mightily about the hams in
> Region 2 were over riding the broadcast stations.


having been around radio for 47 years (all my life) I've always known
that the power level rules were 1kW DC input to the final stage.  Note
that I say INPUT!

It wasn't until 1990, or 91, when the rule changed to 1500w PEP OUTPUT
for all modes.

If someone were to make a concerted effort in their audio stages,
starting at the microphone level, insuring proper 'phase' all the way
through to the modulation transformer, and obtaining enough AC Voltage
to effectivly modulate your carrier without flat-topping, or exceeding
100% on the negative peaks, so that the signal is as clean as possible,
then reverse the phase, then you can run more carrier, with the same
amount of audio, and still maintain 1500W PEP output.

http://www.QSL.net/*wa5bxo*/asyam/aam3.html

Garunteed, I enjoy the 'technical' discussions that appear on the list
from time to time -much better- than the back-biting and bickering that
happens here, more than often.

--
73 = Best Regards,
-Geoff/W5OMR(/5)


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