[GreenKeys] AN/GRC-106A

[wf2u at starband.net]

I have a complete GRC-142 ishelter with all the equipment as issued
(GRC-106A/MD-522 and the rest of the ancillary stuff - power supplies,
field phones, remote control, Kleinschmidt teleprinter and
reperf/keyboard- except for the crypto equipment.
I haven't used the RTTY yet (the Kleinschmidts need cleaning/lube and I
didn't want to turn them on with the dust and grime in them). I use the
radio quite often on SSB and CW.
I use only the headset with it (it's noise proof) because the blower noise
in the small space drowns out the speaker. Part of the installation is an
external exhaust blower which attaches to the amplifier exhaust port and
exhausts the hot air via an air duct.
The external exhaust arrangement is advisable to use anyway, as the
internal blower capacity is not optimal for good cooling on RTTY.

73, Meir WF2U
Landrum, SC





> Here's a pix of the AN/GRC-106A http://www.antiquetelephone.com/mil.htm
>
> I think I'm gonna need earfones...the blower is so loud!!
>
> Lar
> K2JIA
> www.antiquetelephone.com
>
>
>
>
>> Hey OMs;
>>
>> Hey Larry - an MD-522? I used to *BUILD and TROUBLESHOOT*
>> those things back in the early '70's when I worked for The
>> Futuronics Corporation.
>>
>> As I recall the following modules are in it: receiver,
>> transmitter, loopbattery, scope, and audio.
>>
>> I don't know what an AN/GRC-106A is - but the MD-522 was
>> part of a 3 unit set that fit into a Jeep! Where they
>> put the teleprinter, I have no idea! Har!
>>
>> Let me know if you need the manual. I believe that I still
>> have one, and if you want it you can have it for postage.
>>
>> 73,
>> W6ESE - tony
>> NNNNZCZC
>>
>>
>> Larry Tighe wrote:
>>> Howdy Folks,
>>>
>>> I finished putting the AN/GRC-106A HF rig together last nite.  It's
>>> an  exciter/receiver driving a 400 watt amplifier.  The MD-522 is a
>>> TTY modem  generic to the radio set.
>>>
>>> It has shifts of 850 Hz and 85 Hz....Viet Nam era radio.  When in the
>>> 85  Hz shift mode, you can transmit audio along with the TTY signal.
>>>
>>
>> --
>> Tony J. Podrasky | Professor Goddard does not know the relation
>> between
>>                  | action and reaction and the need to have something
>> | better than a vacuum against which to react. He
>> seems | to lack the basic knowledge ladled out daily
>> in high | schools.             -New York Times
>> editorial, 1921
>
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