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My 1952m38A1 has a radio installed in it. It has the following info on it. REC-TRANS-RT-671GRC serial #800452. The power supply has app-112/GR serial #26230 on it. I have done a few searches and not found a manual for this specific radio. Can someone help me identify it and point me to the right manual. Thanks, Mike McMahan

From what you have posted you have what is commonly known as a RT-67 Setup With a PS-112 Power supply.

Similar radio, different freqs... Manuals will be the same as they cover all the radios (RT-66, RT-67, RT-68 )

http://www.n6cc.com/vrc-10-rt-68-transceiver

If you are a Ham Radio Operator the RT-68 is the unit to have as it will operate in the 50 Mhz Ham Bands...

Hope this helps...

REC-TRANS-RT-671GRC serial #800452

Hi Mike,

That number is not quite right. Should be RT-67/GRC.

Take a look in my photo album's sub-album "Jeep Radios":
http://www.willysmjeeps.com/v2/modules. ... _album.php

The military used three separate frequency bands for Armor, Artillery, & Infantry up thru the 80's.



Your setup is a VRC-9 for an artillery unit.



For a full size view that is more readable: http://willysmjeeps.com/v2/modules/gall ... 01_001.jpg

You will want several manuals. Operators and Maintenance.


TM 11-286 Radio Sets AN/VRC-8, -9, & -10 MAR 1951


TM 11-289 Recv'r / Trans. RT-66/GRC, -67/GRC, & -68/GRC. DEC 1953
http://www.radionerds.com/images/4/4d/TM_11-289.pdf2


TM 11-5036 Power Supplies PP-109/GR & PP-112/GR DEC 1954
http://radionerds.com/images/a/ab/TM_11-5036.pdf

These will handle most of what you need to know.

This very nicely done Army Radio Web Site should help you as well: http://www.greenradios.com/Radios/Ameri ... anuals.htm

Thanks for the replies. Still trying to learn about this stuff. Wes you were right. It is 67/. Guess I really have the wrong radio in it. The Jeep is marked with Texas National Guard 36th Infantry 143-3. If I understand the chart it should have a 68/ for Infantry. Can someone tell me if any of the frequencies in the 67/ are used for anything today. Looks like the 68/ still works on the ham frequencies. Thanks again. Mike

Best place to learn and talk radios is on one of the several really good radio group sites.

RF Frequency Allocations Chart will answer this question.

https://www.ntia.doc.gov/files/ntia/pub ... _chart.pdf
A little tough to read

https://transition.fcc.gov/oet/spectrum ... ctable.pdf
Page 17 & 18 lists 27.0 thru 38.0.

Only the frequencies of the RT 66 are not used today 20-27.9mc .frequencies 30mc up are still used by the US military.

The RT-67 and RT-68 look identical, aside from the frequency readout in the viewing window.

The frequencies in the -67 and not used very much and for all practical purposes, you won't hear anything on it. I am a fan of running audio from your smartphone or modern radio to a speaker. That way, you can simulate radio traffic for displays and not have to get the old radio up and running.

Yes. Period correct music coming from the low-fi speaker really sets off a display. edit in clips of seoal city sue and it is like you are standing beside a time machine.

RT-67/GRC is associated with Artillery frequencies of the period,

The pair of units you have would be a "Radio Set AN/VRC-9" provided you have the mount MT-299/GR, control box C-375/VRC and the antenna components (I have the numbers if you care).

Hey Mike,
I sent you a pm.