Only a very few (3 or 4 I think) photos of all of the Amtracs show a radio antenna. I personally think that those tractors could very well have been fitted with RU-GF sets since those would probably have been available, even with vehicle mounts and power supplies, as spares for the tanks. Just conjecture I know but it is my take on the question.
Sorry to bore you all with another radio question but here goes. In the book "Bloody Tarawa" by Hammel & Lane it is stated (page106) that a TBX radio communicated with a TBS radio which was on an... more