Body hole identification, help!

[M37]

Anyone who can offer help,

I have 8 holes in my rear floor that I need to identify, as to their original purpose. If they are not needed for any future military accessories I will weld them shut. This M151 had a hard top installed for its service life and came from Alaska. The holes have stress cracks like the item was heavy or flexed a lot while it was bolted down. These holes are under where the back seat bottom would be.

I also have several holes in my passenger side rear wheelhouse top panel. This M151 has holes for an early antenna mount, so some of these holes are presumably for a radio mount of some variation, possibly early. All the holes in question are circled with white paint pen. The remaining holes not circled are from the hard top.

I will add pictures asap.

[m3a1]

Spitballing here but it looks like this had the table for the radios in the very back. Have you looked at the photos in the Comms section?

[Fil Bonica]

There was a hulking FAC radio set that was installed in the back of 151s.
It contained a long range HF radio,VHF radio and an Aircraft alUHF radio.
It xtended from side to side.
If you want I can find it in my copy of Janes
Think it was an MRC108.

Fil Bonica

[Surveyor]

Here is one. http://www.afdasf.org/mrc108-jeep/mrc-108_jeep.html but I don't think the pictures will help. Maybe contacting the site owner would help if it was for a 108.

[Mark]

I can remember the an/mrc-83, an/mrc-87, TRC-75 radio? which used the m38a1 jeeps.The an/mrc-110, an/mrc-109 radio jeeps(RT524, R442) used the m151 jeeps.The antennas were 10' long?No touching during transmission.The directional antennas were AS2236?Radio relay?The RC-292 was a 3 prong antenna set on the masts assemblies totaling 20' long?There is a lot more radios/ gear I could mention but won't.CAN'T REMEMBER IT,the M108
Maybe this info is reverent to the posting?If not, it can be deleted.But holes had to drilled to mount the radios obviously.

[M37]

This is great to have all the different radio numbers you all are sharing! I hadn't initially thought about the radio pallet possibility because it had a hard top. Most of those I had seen extended over the quarter panel a bit.

I am thinking since this is a 1962 it may have used an earlier series of radios like was common in the M38A1's.

I am going to take the suggestions you all made and hopefull I'll find a matching bolt pattern. I'll spend some time over in the communications section too.

I did find these images of an early M151. It also has all of the early antennas that my body has all the same mounting holes for. Does anyone know what radio set this could be?

The yellow picture is my M151, showing where the antenna mount holes are. It had a different mount on each side.

[rickf]

Those pictures are of our own Mr. Recovery way back when he was only 45 years old in the 60's in Germany. Remember, your 151 may not have always had that hard top on it. Being in Alaska someone may have put it on. They were easy to come by for the longest time, I gave away two of them.

[Surveyor]

If you plan on putting the comm gear back in place, I have the early corner bracket holes on the passenger side as it appears you do. I'll take a couple of pics tomorrow with a tape measure and post so you can check and make sure.

Just got one in from https://fairradio.com/product/sc-c-446061/
Cheapest place I found with decent shipping rates as well. Looks practically brand new. Also picked up a new ab-15 for a real good price from there as well. Some of their antenna sections are priced well but others you can get cheaper on ebay (MS-116, 117, 118). Don't forget the tie-down kit.

[Mr. Recovery]

Those pictures are of our own Mr. Recovery way back when he was only 45 years old in the 60's in Germany. Remember, your 151 may not have always had that hard top on it. Being in Alaska someone may have put it on. They were easy to come by for the longest time, I gave away two of them.

HAHAHA!! That was 55 years ago and I was 20 in 1964

[rickf]

Still sharp as a tack!

[Mark]

Wow!! I haven't heard that saying for a long time!!
Which is sharp!!!

[rickf]

But back on the subject, the radios in his old mutt look to be about the right footprint to match the holes you are showing. Mr. R., Do you remember what that radio setup was? Besides frozen.

[Surveyor]

The passenger side is 5-1/2in center to center. Rear is 6-3/8in. Warning - Bottom line of tape is inches, top line is in tenths (surveyor thing). Sorry, I could not find a folding ruler. I think they stopped making those before I was born.

Disclaimer - Bracket is labeled as a substitute for the original part number. Of the pictures I have collected of earlies they are just not high quality or close enough for me to tell a difference.



Not positive but instead of the rounded version in Mr. Recovery's picture, I think you have the box style on the driver's side. https://www.easternsurplus.net/PartDeta ... ubassembly

[M37]

Surveyor,

I think you are correct, that I need the box style antenna mount for the drivers side. Thank you for the hole dimensions for the passengers side mount as well! I am still not sure what I will do for a radio. I have a few PRC77's and I may use one of those for now.

Mr. Recovery,

Thank you for posting those pictures of you in your M151 in Germany! I like how rickf tries to add 25 years onto you:) you guys are alright by me. I enjoy the friendly ribbing!

Rickf,

You are correct, the top on my M151 could have been put on there at anytime in its service life. Some of the things that caused me to believe it has been on there since the beginning are, every panel of the top has the hood number stenciled on it inside, under the arctic insulation. The body edges and fender tops don't have any wear or dents where the top has protected it, also it only has one coat of factory paint under the areas where the top protected it. I also have a second M151, a few numbers off from this one, and it has the same characteristics under its hard top. This is what makes me think it likely had a radio system that fit inside the dimensions of the top, like the radio set in Mr. Recovery's M151 in Germany.

Fil and M3A1, Thank you both for your input. I am still googling all those suggested radio sets. I found the AN /GRC -3 and the AN / GRC - 19 mounts have a similar hole pattern to those in my floor.

[M37]

Fil,

Can you pm me or email.

I am in need of a battery floor and I wanted to see if you still had them to sell. I pm'ed and emailed you but I don't think they are coming through.

Thanks,

Joe