What type of radio is this?

[carolinamv]

I need help , what type of radio is this and what period is it correct for?
Is it complete minus the one mount that's off it?

[carolinamv]

Also which hand mic would be correct for it if its Korea / Vietnam era?

[52 M-42]

That is a RT-70. It looks like it has a broken MT-300 mount. It is a short range infantry (band) radio. It is definitely VN; but I think it too recent to have been around during the Korean war.

The handset it uses is the H-33 and it has a an internal speaker, but you could probably hook up a 167.

There is lots of information online about these radios. If you need some websites to start your search, just ask.

52 M-42

[carolinamv]

Thanks, would it have been vehicle mounted in a M37?

Is there more to it than what I have , other than the hook up items like power cord, handset , antenna cable, etc to use it in a vehicle?

I have the full mount for it , the one part on it isn't mounted right.

Does anyone know the date it came out and when it was no longer used? Im not sure what era to equip my M37.

[T. Highway]

Jay,

I've found allot of information on this site: http://radionerds.com/index.php/Main_Page

Bert

[52 M-42]

It could be mounted in a M-37. It could also be part of a larger radio system (A/N GRC-3, -5 & -7) which could be mounted in an M-37.

The radio website T. Highway posted is a good place to start. It will give you a good background on the radio and hopefully some other websites to visit.

The military was using these trucks when I was in the Army. These trucks were constantly reconfigured depending on what they were being used for. The military (when I was in) had no shortage of manpower, so adding and removing things from these trucks was no big deal if you had the parts and pieces. That makes "period correct" kind of a meaningless term in my mind. Any two trucks in the same unit on the same day, month & year could be completely (or slightly) different. They could also be different from what they were last week or different from how they would be configured tomorrow or next week. They could also be transferred to another unit, base or country. Different Sp 4's or Pfc's could get their hands on them and change some things (authorized or unauthorized). Sort of like kids with a box of Legos.

So the whole "era" thing is rather broad. Anything you can find in any military unit from 1950 to 1978 is within the "era" these trucks were in use. Things before 1950 were actually still around and being used, so a case can be made for WW II stuff on these trucks (I remember seeing a lot of combat wheels in the late 1960's and early 1970's).

It's a nice big box of toys to play in.

[Carter]

Jay,

I've found allot of information on this site: http://radionerds.com/index.php/Main_Page

Bert

Interesting site Bert, I checked out some of the types I have owned in the past including my old BC348 aircraft receiver. I also clicked on the "M37" at the very bottom of the page and found a drawing I made 04/10/04, almost 11 ago, of the in-cab brace for mounting the hinged, swing open (on the door) spare tire mount. Did not know that ever got published, small world!

[carolinamv]

Ive seen Combat rims on trucks also that came from the Military surplus.

52 M-42 What years were you around that radio ?I just want to be period correct by making sure a Korean War era radio wasn't in a truck made in the late 80's type of thing. That it should be correct era for the truck.

Thanks for the info you guys are putting out. it sure helps. Were most of them mounted on the troop seats in the back?

[52 M-42]

I was in the Army from Oct '68 to Sept '71. I was in the Medical Corps, so I was passed around a lot. I saw lots of different equipment in lots of different situations.

The RT-70 fits perfectly with a M-37 truck. I don't believe there were many M-37's in the Korean War (technically we are still at war with North Korea - there is only an armistice - not a peace treaty); it was almost all recycled WW II stuff in the shooting part of that war.

The RT-70's were usually mounted on the forward (front) end of the cargo bed troop seats, either left or right (usually left side - behind the driver). However, they could be just about anywhere someone decided to put them.

Basically, the mission defines the equipment. What is your truck supposed to do?

[k8icu]

Receiver-Transmitter RT-70/GRC
Years: 1951– mid 1960
Frequency range 47 - 58.4 MHz, two mechanically locked fixed frequency channels, FM, Output 0.5 W.
Uses 6V heaters and 90V plate power for the vacuum tubes and can be powered from vehicle battery using PP-281/GRC (for 12 V) or PP-282/GRC (for 24 V) multivibrator module in the AM-65/GRC power supply / audio amplifier cabinet.
Internal switch selects tank / vehicle / field field use to adjust audio output.
Extremely robust design, modular internal design.
Enclosed schematic printed on pure white silk (I always thought that was cool)
Also as part of larger radio systems GRC-3 to GRC-8.
The RT-70A/GRC variant has a different filament-circuit.

Is correct for truck being marked up as Korean War era vehicle.

[carolinamv]

Im doing a post Korea early/mid Vietnam type truck. Since mines a 1954 .

[52 M-42]

Then that radio is perfect for what you are trying to recreate.