Rtty Protocol
 

I am using Ham Scope and Mmtty to decode RTTY with my sound card. It
works fine for hame radio operators but I have found RTTY on non-ham
frquencies and all I get is garbage. For example, there is an RTTY
signal at approximately 2.042 MHZ at 1100 UTC on the West Coast and
all that displays is random characters. I suspect it has something to
do with the protocol or baud rate settings. Anyone know what they
might be? Not sure if this is maritime station or not. Thanks.

"B.R. Smith" wrote:

I am using Ham Scope and Mmtty to decode RTTY with my sound card. It
works fine for hame radio operators but I have found RTTY on non-ham
frquencies and all I get is garbage. For example, there is an RTTY
signal at approximately 2.042 MHZ at 1100 UTC on the West Coast and
all that displays is random characters. I suspect it has something to
do with the protocol or baud rate settings. Anyone know what they
might be? Not sure if this is maritime station or not. Thanks.

Much of the RTTY that you'll receive on non HAM frequencies will be encrypted.
That is probably why you'll receive the random characters even though you might
have the protocol and baud settings correct.

dxAce
Michigan
USA

Most hams are received in the LSB mode. Comercial statisons usually are
received in the USB mode or the reversed mark/space relationship. Also the
speed (baud rate) and shift are usually differant than the normal ham 45
baud (60 wpm) and 170 Hz shift.



"B.R. Smith" wrote in message
...
I am using Ham Scope and Mmtty to decode RTTY with my sound card. It
works fine for hame radio operators but I have found RTTY on non-ham
frquencies and all I get is garbage. For example, there is an RTTY
signal at approximately 2.042 MHZ at 1100 UTC on the West Coast and
all that displays is random characters. I suspect it has something to
do with the protocol or baud rate settings. Anyone know what they
might be? Not sure if this is maritime station or not. Thanks.

On Sat, 12 Feb 2005 09:23:22 -0800, Dr.Anton wrote:

In article .com,
says...

Uncalled-for insults removed

Well, that'll teach me to keep my filter file up to date.

*PLONK!*

ROFL!
Well done Dr.

Mike

"ryan wiehle" wrote in message
...
Greg wrote:

there used to be press services on RTTY.

The last non-ham RTTY station I remember receiving was a news service for
North Korea, years ago.

I had a PK-232 TNC, with it's SIAM ( signal identification ) mode that would
sniff out the parameters on a mystery signal and attempt to display it for
you. It worked pretty well, I thought, decoding oddball digital stuff more
often than I expected it to.

It was strange to see outdated old Soviet propaganda phrases about
"imperialist capitalist dogs" and about how the standard of living in North
Korea had gotten so good that they were having to turn Americans immigrants
away from the border, seeking asylum.

I've looked for - but not found - anything quite so funny and tragic at the
same time as that RTTY news service from "the people's democratic republic
of Korea" or whatever it was called back then. - It's been a while, I can't
remember for sure.


Charles Brabham, N5PVL

Director: USPacket http://www.uspacket.org
Admin: HamBlog.Com http://www.hamblog.com
Weblog: http://www.hamblog.com/blog_n5pvl.php

You can read that same good ol' commie propaganda online at
http://www.kcna.co.jp/ .


--
Tom Sevart N2UHC
Frontenac, KS
http://www.geocities.com/n2uhc