[MRCA] AN/GRC-106

[KA1LHZ]

Someone replied to an e-mail I had sent commenting on my GRC-106 running 
in my shelter. They said it would sound like a blender running in a 
tornado... I've had pretty good luck with it in the MSC-37 shelter I 
built. I keep the shelter log of all contacts I've made with it. It's 
gotten quite extensive, 40 states and around 29 countries.
73
DE KA1LHZ

On 02/02/2015 07:30 PM, WA5CAB--- via MRCA wrote:
> In addition to what Jeep wrote,
>
> The U-79/U et al are 10-contact connectors.  The ones used on the 
> Vietnam era VHF FM sets only have 5 contacts.
> The T-195 (AN/GRC-19) never saw service in Korea (at least not before 
> the cease-fire).  But did see extensive service in Vietnam.
> The other HF sets such as AN/PRC-47 used the 10-contact family.
> The 5-contact connectors are a PITA to work with compared to the 
> 10-contact.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> In a message dated 02/02/2015 17:50:02 PM Central Standard Time, 
> jeepp at comcast.net writes:
>> On 2/2/2015 4:36 PM, Ray Fantini wrote:
>>
>>> For the last month or so have been working on an AN/GRC-106 and have 
>>> just about all the issues resolved now. The radio works fairly well 
>>> and is almost as useable as some of the newer radios that I have 
>>> been using like the Sunair GSB-800 or my favorite radio right now 
>>> the huge and heavy Harris URC-92(RF-280) but a couple questions keep 
>>> coming to mind. First why did they use obsolete audio connectors 
>>> that were more suited to a T-195 or a RT-68? I would assume that the 
>>> GRC-106 was in production around the same time as the 
>>> VRC-12/PRC-25/77 family of radios with the smaller modern style 
>>> audio connector. But still the 106 has those huge audio connectors 
>>> from the Korean War.
>>>
>>> I intend to install the GRC-106 alongside a VRC-89 in the back of my 
>>> M-151 but the more I think about it may have to get rid of the 
>>> RT-1439/VRC-89 setup and find a VRC-12 to more closely match the 
>>> GRC-106, but looking at the audio cables and accessories wonder if a 
>>> way old RT-68/VRC-10 may be a more appropriate match.
>>>
>>> Second, how are you supposed to operate around that radio when the 
>>> amplifier is running? The mechanical noise the fans in the 
>>> transmitter produce are way annoying. Fortunately you can turn the 
>>> amplifier off when not expecting to transmit but when its running 
>>> you can only hear with the headset, and then that's not all that 
>>> well using the stock headset. I am thinking of modifying a newer 
>>> series VRC headset with proper headset as opposed to the poor 
>>> quality one ear telephone style headset that came with the radio. 
>>> Cannot imagine how anyone would be able to stand being in a little 
>>> S-250 style shelter with one of those screaming and the old 
>>> mechanical teletypes banging away.
>>>
>>> Don't get me wrong, the radio has its good points, low power drain 
>>> in receive and standby, easy to work on after you build or buy all 
>>> the cables and produces buckets of power but the ergonomics of the 
>>> radio appear to be lacking. Maybe radio operators were just tougher 
>>> back then?
>>>
>>>
>>>
>>> Ray F
>>>
>>>
>>>
>>
>> Ray, FWIW, a couple of comments.  The '106 and the GRC-19 were 
>> primarily RATT rigs and, hence, the noise was not an issue most of 
>> the time as the operator would probably step out of the "ratt-rig" 
>> and/or wear phones.  The connectors were old family and were "carbon 
>> compatible" and interchangeable with all radio of that vintage; that 
>> is, post PL-55/PJ-068.  The new, smaller connectors were for dynamic 
>> mics.  It hard to get the wrong audio device hooked up with such 
>> different connectors... Anyway, perhaps the comments were what you 
>> already knew?
>> Jeep K3HVG
>
>
>
>
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