[GreenKeys] Teletype on 4.004 Revisted

[NNN7DXB at aol.com]

Richard:
 
Thanks for that report. That 4.004 RTTY is still there again, right on  
time,
and sounds close enough to be in the next room here in SC. Very  strong
and very clear. 
 
I am amazed you can hear it in Los Angeles. We know from another in
the group that it is (was) also heard in Indiana. 
 
Dave
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In a message dated 11/24/2013 10:39:59 A.M. Pacific Standard Time,  
1oldlens1 at ix.netcom.com writes:



----- Original Message ----- 
From: "Jim Haynes"  <jhhaynes at earthlink.net>
To: <NNN7DXB at aol.com>
Cc:  <greenkeys at mailman.qth.net>
Sent: Sunday, November 24, 2013 9:30  AM
Subject: Re: [GreenKeys] Teletype on 4.004 Revisted


> My  understanding is that modern crypto equipment emits a 
> continuous  stream
> of random-looking bits and they keep it up regardless of  
> whether there
> is traffic, so as to foil traffic  analysis.
>
> When the transmission starts at precisely 5PM it may  be 
> running in
> parallel with transmission on another frequency  used 
> during the daytime,
> so the receiver can switch  frequencies without a break in 
> traffic.
>
> jhhaynes at  earthlink dot net

I hear those same signals in Los  Angeles.  I think I've 
also heard them on other frequencies, for  instance near 8 
mhz but didn't make any notes. Same thing here trying  MMTTY 
both A and D and some other programs, it _sounds_ like 
regular  RTTY but isn't. It decodes (if I can use that term) 
to nonsense. If this  is encrypted military traffic it would 
be interesting to know who is using  it and why. Evidently 
plain old HF has some advantage over satellite for  somebody. 
Goes along with the "counters".


--
Richard  Knoppow
Los  Angeles
WB6KBL
dickburk at ix.netcom.com



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