[Milsurplus] SRR-11/12/13 receivers

[Kenneth G. Gordon]

On 4 Aug 2016 at 12:38, Nick England wrote:

> I have an original of that manual and the bold vertical lines are
> included on the Change 1 pages - I don't have any info on the later
> changes. My ESO catalog says NObsr-57134 is also dated 31 August 1950,
> but that seems odd and could be an error. NObsr-57135 (for the
> FRR-21,22,23) is dated 19 Dec 1951 so I bet that is correct for 57134
> also. 

That makes sense, but I suppose we don't yet know for certain.

> I have a 1974 document that lists 3 SRR-11s still in use at NAVCOMMSTA
> Italy. Here's a 1966 shipboard photo showing what is probably an SRR-11
> amongst the WRR-2 receivers
> http://www.navy-radio.com/ships/cg10/albany-1966.jpg 

Well, my experience with the SRR-11 showed that they were very good VLF receivers, and 
anecdotal evidence showed me that the SRR-11 and their FRR versions were used 
sometime after later receivers.

Also, in that photo, it looks as though the operator at the far right is using a bug of some sort.

Ken W7EKB