[GreenKeys] RTTY signal

[telegrapher at att.net]

I like to use Hamscope on the PC for informal rtty monitoring.  For one 
thing you can see the receiver audio passband therefore allowing you to 
tune a signal in where it's comfortable hearing as well as moving it 
around allows you to optimize it in the passband.  You can also put a 
Bandpass filter into use with a click of the mouse.  It's quite sharp 
and does wonders if your having some near frequency noise or other type 
signal interference.  Added plus's are you can tune whatever shift you 
want and see it on the screen as well as change the baud rate in steps 
of 1 baud at a time.  YOu can also see other signals in the passband and 
adjust your receiver to compensate for them.  In this case i don't think 
you'd ever notice a difference between 50 and 50.5 baud.

I digress,  In tuning in a CKN 74.5 baud, 850 shift signal on 8.4 Mc. 
this morning i heard something that sounded more like press service. 
Tuning lower i find a marker signal with occasional traffic being sent. 
  I can identify that it's 330 cycle shift and it sounds like either 
45.5 or 50 baud but i can't get it to print out anything.  I suspect 
it's from the Pacific region someplace.  NOw there is the Canadian 100 
wpm signal, a FAX transmission and this one all within a few kc of each 
other so you'll need to play around with the receiver and software to 
get it tuned clearly.  Can some of you other stations take a listen
to see if you hear it also.  Maybe it's encrypted in one manner or 
another.  Be interesting to see what it is.  Sounds like the old CLN 
LaPrensa station out of Cuba but it doesn't have the same chirp!

Hamscope is a good RTTY program offered from the internet and works neat 
with just a soundcard.  I take the 4 ohm audio out of the back of the 
FT-990 and feed the soundcard Mic. input.

Larry
W0OGH