[Milsurplus] thoughts on the SRR family of radios

[Nick England]

I don't know about today's installations, but as of 2007 many surface ships
were being fitted with Harris AN/URC-131(V) (HFRG High Frequency Radio
Group) systems which included the R-2557/URC, a version of the Harris RF-590
http://www.navy-radio.com/rcvrs/images/r2557-61.jpg

Here's a little info - *From "Jane's Military Communications"*- The
AN/URC-131(V) High Frequency Radio Group (HFRG) system is an integrated,
solid-state naval communications suite, designed to provide a balance
between transmitter and receiver performance in a co-located shipboard
environment. The three main communications components of the AN/URC-131 (V)
are the Broadband Transmit Group (BTG), the Narrowband Transmit Group (NTG)
and the receive system. The third-generation BTG is of solid-state design
and provides coverage of the 2 to 30 MHz band. Three BTG variants have been
produced - a 4 kW (8 circuit) system, an 8 kW (17 circuit) system and a 12
kW (26 circuit) system. All three systems use only two topside broadband
antennas. The NTG consists of up to three solid-state 1 kW transmitters
with power post-selectors and digital antenna couplers. The NTG can be
tuned in the presence of adjacent antenna interference and offers
completely silent tuning. It has a rapid-tune digital antenna coupler. It
can also serve as a stand-alone system aboard small ship platforms. The
receive system's R-2557A/URC receiver operates over the full LF, MF and HF
frequency range from 10 kHz to 30 MHz. Other features include: up to 49
receive circuits; passive antennas, which require no electronics topside;
and an atmospheric noise-limited design. The HFRG's HFRG Remote Control/
Monitor Subsystem (RCMS) is designed for 'lights out' operation in the
transmitter and receiver compartments. Its features include: a ruggedized,
PC workstation with full ASCII keyboard and pointer for function selection/
activation; redundant control buses and subsystem controllers for system
survivability.


Nick England K4NYW
www.navy-radio.com

On Tue, May 10, 2016 at 11:33 AM, <mstangelo at comcast.net> wrote:

> Mike,
> Mike,
>
> That's another good analogy.
>
> Would you know the answer to the question I posed? Who is manufacturing
> the HF receivers and transmitters used by the Navy today?
>
> Mike N2MS
>
> ----- Original Message -----
> From: Mike Morrow <kk5f at earthlink.net>
> To: milsurplus at mailman.qth.net
> Sent: Mon, 09 May 2016 20:04:27 -0000 (UTC)
> Subject: [Milsurplus] thoughts on the SRR family of radios
>
> Mike / N2MS wrote:
>
> > It seems like the R-390(A) receiver was the F4 Phantom jet of
> communications receivers.
>
> I don't.  I think the C-130 Hercules is a far more apt comparison.
>
> Mike / KK5F
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