Radio

1959 - 1978, M151, M151A1, M151A2, Technical questions and discussions, regarding anything related to the M151.
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Data Plate
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Radio

Post by Data Plate » Thu Dec 28, 2017 1:24 pm

What were the most common radios used in the A2.

Rickf
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Re: Radio

Post by Rickf » Thu Dec 28, 2017 3:08 pm

The 524 was probably the most used from the late 60's on up till the Gulf war. They even brought them back during the Gulf war when they had so many problems with the Sincgars. They also used the 246 with fixed frequencies in the earlier periods of Vietnam.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: Radio

Post by Data Plate » Fri Dec 29, 2017 7:28 pm

Thanks Rick

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Re: Radio

Post by W. Winget » Fri Dec 29, 2017 9:02 pm

I'd also add it depends on the unit.
Infantry units would have a PRC-77 (earlier PRC-25) mounted in a AM-2060 mount in the jeep (along with 106mm and TOW weapons jeeps as the systems were dismoutable) While Mounted Infantry (Comapny Commander) would have a VRC-46 with Aux reciever R-442 mounted (never being dismounted) and the Bn Cdr had the VRC-47 (with multiple channels) sometimes with one on each fender in a larger Brigade level jeep.
Your range of possibilities depends on what you want to represent as a unit. A Mech Company Cdr would not have to dismount a PRC-77 for example, hence no AM-2060 mount.
V/R W Winget
PS: Earlier MUTTs could have the PRC10 (actually 8,9 or 10 depending on Armor/Artillery/Infantry) mounted in a vehicle powered base AM-598/U, so if you wanted very early Vietnam, this is an option with only an AB-15 antenna VS the larger mounts.
WAW
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Re: Radio

Post by Rickf » Sat Dec 30, 2017 7:23 am

W. Winget wrote:
Fri Dec 29, 2017 9:02 pm
I'd also add it depends on the unit.
Infantry units would have a PRC-77 (earlier PRC-25) mounted in a AM-2060 mount in the jeep (along with 106mm and TOW weapons jeeps as the systems were dismoutable) While Mounted Infantry (Comapny Commander) would have a VRC-46 with Aux reciever R-442 mounted (never being dismounted) and the Bn Cdr had the VRC-47 (with multiple channels) sometimes with one on each fender in a larger Brigade level jeep.
Your range of possibilities depends on what you want to represent as a unit. A Mech Company Cdr would not have to dismount a PRC-77 for example, hence no AM-2060 mount.
V/R W Winget
PS: Earlier MUTTs could have the PRC10 (actually 8,9 or 10 depending on Armor/Artillery/Infantry) mounted in a vehicle powered base AM-598/U, so if you wanted very early Vietnam, this is an option with only an AB-15 antenna VS the larger mounts.
WAW
The VRC designation was for "Vehicle Radio Communications" where the PRC was "Portable Radio Communications". They were systems designators as such and the main radios they used were the RT-524, RT-246 receiver/transmitters and the R-442 receiver only. I didn't mention the manpack radios since they were not the main radios carried by the vehicles but they were a mainstay of the comms and should be considered since they did fit into the same mount.

Here is a list of all of the radio systems that were approved for mounting in the 151.

VEHICLE SETS AND AUTHORIZED INSTALLATIONS (for M151 Series)
ALL Below are excerpts from SB 11-131, dated 1 April 1988
below submitted by Dan Parmley Jr. - The details (contents) of each of these kits is listied in this manual. I will attempt to try an add each kit details at a later date.

Radio Set - - - - - - - - - - - Installation Kit - - - - - - - Kit NSN

AN/GRC-106, -106A - - - - - - - MK1373/GRC-106 - - - - - - -5820-00-351-3058

AN/GRC-160, -125 - - - - - - - -MK-1234/GRC - - - - - - - - -5820-00-450-6804

AN/GRC-163 - - - - - - - - - - -Pallet Mounted - - - - - - - -5820-00-054-4753

AN/PRC-25, 77 - - - - - - - - - MK-1312/PRC - - - - - - - - -5820-00-193-8337

AN/VRC-12 - - - - - - - - - - - MK-1221/VRC-12 - - - - - - - 5820-00-450-6793

AN/VRC-43 - - - - - - - - - - - MK-1220/VRC-43 - - - - - - - 5820-00-450-6792

AN/VRC-44 - - - - - - - - - - - MK-1241/VRC-44 - - - - - - - 5820-00-469-6685

AN/VRC-46, 53, 64 - - - - - - - MK-1234/GRC - - - - - - - - -5820-00-450-6795

AN/VRC-47 - - - - - - - - - - - MK-1306/VRC-47 - - - - - - - 5820-00-193-8348

AN/VRC-48 - - - - - - - - - - - MK-1225/VRC-48 - - - - - - - 5820-00-479-3034

AN/VRC-49 - - - - - - - - - - - MK-1224/VRC-49 - - - - - - - 5820-00-450-6795

AN/VRC-54 - - - - - - - - - - - MK-1508/VRC-54 - - - - - - - 5820-00-402-5285

AN/VRC-55 - - - - - - - - - - - MK-1390/VRC-55 - - - - - - - 5820-00-351-3060

AN/VSC-2 - - - - - - - - - - - -MK1370/VSC-2 - - - - - - - - 5815-00-351-3050

AN/PRC-47 - - - - - - - - - - - MK-1519/PRC - - - - - - - - -5820-00-177-1725

C-6709/G - - - - - - - - - - - -MK-2116/VRC - - - - - - - - -5820-01-159-1668

AN/VRC-48 OL-275/VRC - - - - -MK-2271/VRC - - - - - - - - -5820-01-159-1773

AN/VRC-49 OL-275/VRC - - - - -MK-2261/VRC - - - - - - - - -5820-01-159-1668

AN/VRC-47 OL-275/VRC - - - - -MK-2259/VRC - - - - - - - - -5820-01-161-3911

AN/VRC-46 OL-275/VRC - - - - -MK-2168/VRC - - - - - - - - -5820-01-140-1701

AN/VSQ-1 - - - - - - - - - - - -MK-2224/VSQ-1 - - - - - - - -5820-01-166-9154

AN/VRC-46, -24, 24A - - - - - - MK-1455/GRC - - - - - - - - -5820-00-401-9697

AN/VRC-24 - - - - - - - - - - - MK-1362/VRC-24 - - - - - - - 5820-00-351-3040
Last edited by Rickf on Sat Dec 30, 2017 10:51 am, edited 1 time in total.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone


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Re: Radio

Post by markrdje » Sat Dec 30, 2017 8:35 am

Here's what I thought the letters meant for the radios;
GRC--ground radio communications
VRC--vehicle radio communications
PRC--Portable radio communications
The AN meant army navy
RT meant receive transmit
R meant receive

I never seen mk
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Re: Radio

Post by Rickf » Sat Dec 30, 2017 10:52 am

MK is the Mounting Kit
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: Radio

Post by Data Plate » Sat Dec 30, 2017 11:41 am

All great info thanks for posting it

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Re: Radio

Post by Surveyor » Tue Jan 02, 2018 2:05 pm

Would a AN/GRR-5 fall into any of the above installations? Or on an early m151 for that matter?
1960 M151 Run #1 (working on it)

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W. Winget
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Re: Radio

Post by W. Winget » Tue Jan 02, 2018 6:14 pm

It was in use in 1959-60, and provided High Frequency coms, which likely was preferred by forward ground units like SF when down in the valleys or such, so I have no doubt somewhere there was a M151 or M151A1 equipped with an AN/GRR-5.
Finding a period photo of one is the best verification though, followed by the Tech manuals, possibly PS magazine issues from that period (free on-line) would cover some PMCS (Preventative Maintenance Checks and Services).
V/R W Winget
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Re: Radio

Post by Kurt Lesser » Sun Jan 21, 2018 10:34 am

SF units in the '60s preferred the GRC-9 or the PRC-74 transceivers for HF use. I doubt any SF unit would be bothered humping an HF receiver.
Kurt Lesser
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Re: Radio

Post by markrdje » Sun Jan 21, 2018 2:34 pm

Here's what I remember for the radio jeeps--an/mrc-110(2 rt-524s), an/mrc-109(rt-524, r-442?), an/mrc-134, an/mrc-135.The last 2 had TH-81s with the radios, which had a lot of circuits for the field phone ta-312? The last 2 were hard to trouble shoot it when it didn't work.
I remember the an/prc-47 being a lot heavier than the PRC- 25, the PRC- 77.The batteries were ba-386, then it went to the 4386.
I also remember wet cell batteries? A RC-292 was an antenna with vertical masts with 3 stem prongs at the top 30' or 40' tall? used to increase the range of the radios, the AT-2236 was a directional antenna.
Aw, that's it, don't remember any more. Oh ya, reels of com wire, stuck a bar in it, 2 Marines would walk out the wire for the field phones
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Re: Radio

Post by muttguru » Sun Jan 21, 2018 2:48 pm

W. Winget wrote:
Tue Jan 02, 2018 6:14 pm
...............Finding a period photo of one is the best verification though, followed by the Tech manuals,
V/R W Winget
Adrian....the appropriate TM for the GRR-5 is/was TM11-295..... someone has it in PDF format I think.
Ken
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Re: Radio

Post by Kurt Lesser » Mon Jan 22, 2018 9:51 am

Send me a PM with an email address and I'll reply with the TM for the GRR-5.

Sure would like to find a listing of the more modern MRC series of radios. I've looked for years without success. There is a document that shows the older ones.

Kurt
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US Navy, 1969-1975
M996A1 Ambulance w/M101A3 Trailer
M274A2 Mule
M151A1 Mutt w/M416B1 Trailer
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Re: Radio

Post by markrdje » Wed Jan 24, 2018 7:44 am

pvtjarhead might have what you are looking for
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