[Milsurplus] Russia vs. US

[Mike Morrow]

Ray Fantini wrote:

> In working with this radio and the older R-105/8 radios I see many
> similarities with the SRR-11/13 radios. ... Anyone have any idea
> how two different countries produced radios using some of the same
> ideas?

The AN/SRR-11/12/13 receivers made their appearance in service in the very early 1950s.  I think most manuals for the sets are originally dated 1952.

I would guess that not even the old Soviet R-105D-series was in service that early, and it does not have much commonality in construction with the US sets mentioned.  The modernized smaller and lighter R-105M-series is somewhat closer, but all the information I've come across seem to indicate that this M-series wasn't issued until the mid-1960s.  It was definitely very very dated technology by that time.

I'd guess these Soviet designs that came long after the AN/SRR-11/12/13 likely did not use the US sets as a model.  They seem to me more of a logical implementation of dated technology (analog optical projection displays and subminiture tubes) long long after US designs had abandoned such.

73,
Mike / KK5F