Firstly, yes it was a radio jeep. The photo of the rear wheel arch behind the passenger seat shows a spacer bracket that moves the seat forward a bit so that it doesn't make contact with the wheel arch. The power cables for the equipment mounted on that side passed through it so that they could not be damaged. There would have been two radio trays mounted, one on each of the rear wheel arches. They were fixed down by four bolts using the standard holes on the top of each wheel arch. They were also supported by brackets (secured to the two holes in the side panel of the wheel arch). Looking at the photo carefully you can see the outline of where the bracket was fixed.
Details of the radio mounting kit can be found on my website here: http://www.m201.com/access/rt.htm
Secondly, the condition of the jeep indicates that it was probably stored in reserve for many years by the army. The ANTIGEL information refers to antifreeze, so based on the year (80/81) the jeep may have been put into storage at that time. I have only seen 'ANTIGEL' information like this on jeeps that were put into storage. In most examples I have seen it is under the hood like yours but in one case I saw it on the windshield glass.
A couple of favours to ask now.
Can I use a couple of your photos on my website?
Can you let me have a full set of the numbers from the jeep? You can download a chassis number location document from this page on chassis numbers: http://www.m201.com/chassis/chassis.htm
(the links are at the bottom of the page). I need them for the M201 database. Thanks.
Very nice jeep!
Andy (website http://www.m201.com/