[ARC5] U.S. WW II equipment - SCR-269-* Versus AN/ARN-7

[Mike Morrow]

Sandy wrote:

> I was aware of the 100-200khz band addition.

That was a *major* (non-trivial) change in the design...not one
that could be back-fitted to any existing BC-433-* to turn it into
an R-5*/ARN-7.

Thus...all R-5*/ARN-7 units were made as such from the beginning.
None had prior service as a BC-433-*.

Mike / KK5F