[Milsurplus] A USCG secure teletype room: 60's style

[Nick England]

I've seen an R-389 in a few sub photos but not on USN surface ships. I was
surprised to see them on that USCG cutter. The SRR-19 was a pretty common
USN shipboard replacement for the SRR-11. My impression is that the WRR-3
was more common on subs than on surface ships for some reason. Smaller
compared to SRR-19? Less suited to copy LF multi-channel Fleet Broadcast?

And I still can't believe no one bid on that eBay BRR-3. It is an
interesting and rare bird.

Cheers
Nick

On Thursday, October 13, 2016, Mike Morrow <kk5f at earthlink.net> wrote:

> Ken wrote:
>
> > One thing I've always found very interesting is that the entire
> > run of R-389s, something under 1000 receivers, were built under
> > an ARMY contract, yet the NAVY is the arm which used VLF almost
> > exclusively.
> >
> > I've never been able to figure that one out.
>
> I don't think of the R-389/URR as primarily a VLF (3 to 30 kHz) receiver.
> It seems more purposely an LF and MF receiver.  But regardless, the USN had
> their own cold war era receivers that covered the same range and whose
> construction was more suitable for shipboard use:  AN/SRR-11, AN/FRR-21,
> and especially the AN/WRR-3*.  The submarine-service AN/BRR-3 is VLF only,
> with top coverage ending at 30 kHz. (The AN/BRR-3 units were the most
> important receivers onboard pre-mid-1970s ballistic missile
> submarines...possibly the most important receivers in the entire strategic
> force triad.)
>
> So, I don't think the USN had any real need for the R-389/URR.  But the
> R-390*/URR was used almost everywhere before the mid-1960s, when the
> R-1051*/URR replaced it.
>
> Cold war days are coming back.
>
> Mike / KK5F
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-- 
Nick England K4NYW
www.navy-radio.com
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