[Milsurplus] Question ( RBS; submarine )

[Meir WF2U]

I was not specifically talking about COMINT in a submarine, due to space/personnel issues, but generally on the larger surface ships. On the other hand, sometimes special intelligence operations involved submarines, so it's not unreasonable to assume that on some missions there may have been some COMINT and other ELINT personnel on board.

Meir WF2U

On August 24, 2016 1:49:11 PM EDT, "Kenneth G. Gordon" <kgordon2006 at frontier.com> wrote:
>On 24 Aug 2016 at 11:21, Meir WF2U wrote:
>
>> Subs also have multiple receivers connected to the same antenna. How
>would you like to receive 
>> fleet traffic while on the other receiver which you're trying to pick
>up some enemy traffic, but you 
>> can't, because your first receiver is blasting into your COMINT
>receiver, or vice versa?
>
>Well, from what I have learned, I tend to agree with Meir concering
>DFing radiation from 
>receiver HFOs: after WWII, the Germans maintained that they never even
>considered such 
>a thing to have any use whatever.
>
>I think the mutual interference issue was far more important.
>
>As for listening to two (or more) signals at once, both the RAK/RAL and
>the RCH/SLR-F 
>(and probably other receivers and controls boxes) were setup to mix
>outputs from at least 
>two receivers into one headset. In the case of the RAK/RAL the control
>box for the two was 
>setup so that the operator could listen to either or both at the same
>time.
>
>Lastly, from the war patrol reports I just finished reading for both
>USS Cod,and for the USS 
>Pamponito, listening for enemy radio traffic was not even considered or
>bothered with. Such 
>activity was pretty much assigned to a special shore-side Naval unit
>tasked with decoding 
>enemy radio traffic and was never bothered with on a submarine.
>
>All submarine radio work that I have so far seen consisted in reports
>to and from 
>COMSUBPAC while attempting to avoid or deal with enemy jamming efforts.
>Surprisingly (to 
>me) there appear to be only a few, very limited in numbers, common
>frequencies in use, 
>harmonically related at 4, 6, 8, and 12 mHz, such that the enemy would
>have no problem 
>listening in on our comms. However, also, apparently, our encoding
>methods were never 
>broken by Japan during WWII.
>
>Ken W7EKB
>
>---
>This email has been checked for viruses by Avast antivirus software.
>https://www.avast.com/antivirus
>
>______________________________________________________________
>Milsurplus mailing list
>Home: http://mailman.qth.net/mailman/listinfo/milsurplus
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Milsurplus at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20160824/5d119805/attachment.html>