Postwar wireless mounting bracket ID

[Eric B]

Hello

Based on looking at the holes and the antennae mounting bracket as used on the AMU's. The holes seem to line up.

I always looked at the corner bracket mounting holes which are a different distance in length. But the mounting bracket seems to match up to both area as there are multiple holes on it.

Which means i had three radios installed. The plates that i have bolted on must be backing plates for the bracket when installed on something else.

Thanks
Eric