[MRCA] GRC-106 Pin J

[B. Smith]

So it looks like using  using break out boxes for the connectors and 
feed audio out from the GRA-39 C-2229 to pin "J" will drive the GRC-106 
mic input. Kinda like to figure this out now and not at midnight at 
Gilbert after the pop corn Walt ?
That will be the basic plan but wondering if we will have enough drive? 
-- perhaps have a small amp for the mic line on standby?
Z

On 9/2/2016 6:16 PM, Tom B wrote:
>
> I should have added that pin J is NC on the H-33.
>
> Tom
>
>
> On 9/2/2016 6:11 PM, Tom B wrote:
>>
>> According to the GRC-106 manual, the dynamic mic input goes directly 
>> from 1A5 to pin J on both audio connectors J18 and J19.  It looks to 
>> me like you could easily make it work with the GRA-39 with the 
>> correct cable.  It looks like only one wire is moved.
>>
>> I have some cables here that have two U-228 connectors and one U-77 
>> but I don't know what they were made for.  It would fit the GRC-106 
>> for this application but I am not sure what these were for.
>>
>> I have seen a similar cable for the PSG-2.
>>
>> Tom
>>
>>
>>
>> On 9/2/2016 5:59 PM, WA5CAB--- via MRCA wrote:
>>> It is still listed in SB 11-6 (FSC 6135 Primary Battery Supply Data) 
>>> dated 28 May 1982.  I don't have anything more recent.
>>>
>>> But TM 11-5820-489-nn do not all date from 1983 through 1987.  The 
>>> initial manual of the series, TM 11-5820-489-35P (which replaced SIG 
>>> 7 & 8 AN/GRA-6) was dated 11 June, 1962.  TM 11-5038, which 
>>> originally dates from 18 April, 1951, wasn't replaced by a 
>>> long-number version until some time after Change 7 dated 16 May 1967.
>>>
>>> Robert Downs - Houston
>>> wa5cab dot com (Web Store)
>>> MVPA 9480
>>>
>>> In a message dated 09/02/2016 16:01:41 PM Central Daylight Time, 
>>> RAFANTINI at salisbury.edu writes:
>>>> The TM 11-5820-489 family of books all date from 1983 to 87 so the 
>>>> AN/GRA -6 family of products were still in production and use 
>>>> around the same time as the AN/GRA-39. I would speculate that the 
>>>> GRA-6 was kept around just for that fact that it would directly 
>>>> support the AN/GRC-106 family of radios. The GRA-39 always appeared 
>>>> to be a newer and better box but maybe the more primitive GRA-6 had 
>>>> its place?
>>>>
>>>> Will have to look and see if I can find production dates on my set.
>>>>
>>>> How long was the BA-414 (45 volt B Battery) available???
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Ray F/KA3EKH
>>>>
>>>>
>>>
>>
>>
>>
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