[Milsurplus] thoughts on the SRR family of radios

[Nick England]

But of course all that is being turned into some little box called the DMR
Digital Modular Radio from General Dynamics
https://gdmissionsystems.com/radios/digital-modular-radio/

See page 12 of
http://www.ndia-sd.org/images/stories/Briefs/Fall2015/11.28.15NDIA_PMW170.pdf


Nick England K4NYW
www.navy-radio.com

On Tue, May 10, 2016 at 12:55 PM, Nick England <navy.radio at gmail.com> wrote:

> Oops, forgot the HFRG photos
> http://www.navy-radio.com/xmtrs/hfrg-01.JPG
> http://www.navy-radio.com/rcvrs/images/hfrg-cvn75-2010.jpg
> http://www.navy-radio.com/xmtrs/hfrg-02.JPG
>
> Nick England K4NYW
> www.navy-radio.com
>
> On Tue, May 10, 2016 at 12:52 PM, Nick England <navy.radio at gmail.com>
> wrote:
>
>> 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
>>>
>>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20160510/9e07f712/attachment.html>