[GreenKeys] AN/MRC-32 RATT

[Nick England]

Places to get info -

1953 JANAP 161
Directory of Communications-Electronic Equipment
(Navy, Army, & Air Force)
http://jptronics.org/radios/Military/JANAP161/index.html
follow on to NAVSHIPS 900,116 + Signal Corps TM 11-487
 - includes 2-page spec sheets for each equipment type 	

1958 MIL-HDBK-161, NAVEXOS P-2058, TM-11-487A
(NOTE: the 1950 TM11-487A is Army only)
Military Handbook - Electronic Communication Equipment
(Navy, Army, & Air Force)
2300 pages -updated, expanded version of JANAP 161
PDF version on DVD available from Andy Moorer
See ebay item 120703828653

1964 TM-11-487A-1  (AN/AIC-AN/FRC)
1964 TM-11-487A-2  (AN/FRR-AN/TCC)
1964 TM-11-487A-3 (AN/TCD-AN/ZZZ)
Military Standardization Handbook - Electronic Communication Equipment
(Navy, Army, & Air Force)
1964 increments to 1958 edition

1963 NAVSHIPS 94200.1 Directory of Communication Equipment (USN & USMC)
http://www.navy-radio.com/manuals/94200.htm
AN/MRC-12 to AN/MRC-35A 	   22 pages 	download 7 MB pdf
AN/MRC-40 to AN/MSC-3 	   27 pages 	download 10 MB pdf

Robert WA5CAB may have some of these available too - his copies are
always excellent quality.
cheers,
Nick K4NYW
www.navy-radio.com

On Mon, Apr 4, 2011 at 11:12 AM, Duncan Brown <duncanancy at earthlink.net> wrote:
> Robert,
>
> Thanks for your comments; I'll have to look for a copy of TM 11-487A. I
> was not aware of the "vehicle included" aspect of the "Mobile"
> installation designator.  In our company in Viet Nam (337th Radio
> Research Co., supporting 1st Inf Div), a lot of the shelters had been
> dismounted from their vehicles and were sitting on the ground or
> concrete pads.  Although we were supposedly a "tactical" company, I
> guess it made sense, if we were going to stay put in one place for many
> months (years?), to dismount the shelters and make the trucks available
> for other uses.
>
> Our main TTY (landline) communications shelter was an AN/MSA or MSC -
> something; don't remember exactly.   I have searched for it on the
> internet, but have not been able to find anything like it.  It was a 2
> 1/2 ton truck sized shelter, no windows, no tables.  It had four TT-4
> page printers, four KW-7 crypto units and four TH-5 modems all mounted
> in racks (half on each side).  It was always sitting on a concrete pad
> and snugged up against the comms/operations building.  Any idea what it
> might have been?
>
> Some people seem to think the JAN system started after WWII.  I knew it
> started during WWII, just wasn't sure when.  I would love to have a
> wall-sized JAN nomenclature chart for the Museum.  Let me know if you
> ever come across another one!
>
> Thanks,
>
> Duncan
>
>
>
> On 03-Apr-11 22:03, WA5CAB at cs.com wrote:
>> Well, yes.  That's exactly what TM 11-487A says.  All of the hard data
>> (either the manual on the set, or reference manuals) I have indicates that a
>> specific vehicle is included in the list of components.  This is not the case
>> with ARC, GRC or VRC.  Further, most (but not quite all) radio sets included
>> in AN/MRC- sets were built for something else originally.  For example,
>> AN/MRC-20 consists of an M38A1 carrying a large chest containing AN/ARC-3,
>> AN/ARC-8 and AN/ARC-27, plus antennas and some interconnection (retransmission)
>> boxes.
>>
>> Definition distinguishing between "M"RC and "V"RC is that in the first case
>> the vehicle has no other purpose but to carry the radio equipment and in
>> the second, but in the second case, the radio is intended or designed for
>> installation in vehicles but the primary purpose of the vehicles is other than
>> hauling the radio.  Now, it's a fine point as to what else you could do with
>> the deuce-and-a-half hauling an SCR-399 or an AN/GRC-26.  But in a few hours
>> you could dismount the shelter and go off and do something else with the
>> truck.  Which was on the Unit TO&E as a one of several trucks, not as a radio
>> station.
>>
>> One other comment, the JAN system first began to appear in late 1942.  I
>> have a wall chart dated June 1943.
>>
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