Hello Mark,

It is a bit difficult to really look at those shock mounts in the photo. Do they look like a producytion type mod, or a "One off".  I wonder if someone did a mod for a use later in life? Is the cal book inside the case? 

73

Dave K1WHS

Hi Everyone

I have a BC-221N that is not in the typical metal case for portable use.  

Rather, it's on a shock mount.

I've not encountered one like this before.

I know various bomber aircraft had a BC-221 (portable unit) stored on board,  and I'm interested in learning when this type of mounted unit was used instead.

I didn't see anything in TM11-300.

73 Mark K3MSB

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