[RTTY] Funny signal

KE1JF-Tom ke1jf at cox.net
Tue Jan 11 07:21:38 PST 2011


I always listen to my Transmission with the rigs TX Monitor & leave the 
computer off. In FSK all could sound fine on the computer but the rig could 
not be sending correctly.

73,
Tom, KE1JF

--------------------------------------------------
From: <W4LA at aol.com>
Sent: Tuesday, January 11, 2011 10:14 AM
To: <aa5au at bellsouth.net>; <chen at mac.com>; <RTTY at contesting.com>
Subject: Re: [RTTY] Funny signal

>
> That's why I use the "monitor" button to check.  Or a second  radio!
>
> Todd / W4LA
>
>
>
> In a message dated 1/11/2011 9:34:59 A.M. Eastern Standard Time,
> aa5au at bellsouth.net writes:
>
> I didn't  see that one but I had many stations calling me with no shift,
> just a
> steady mark tone.  Normally I'll see this once or twice but it seemed  to
> happen
> at least 15 different times.  I just sent "STATION CALLING  YOU ARE 
> SENDING
> ONLY
> A STEADY CARRIER NO SHIFT".   Some kept  calling and some hopefully went
> off to
> figure out why their FSK keying  circuit wasn't working.
>
> I believe it's important this gets checked  BEFORE the contest. hi
>
> 73, Don AA5AU
>
>
>
> ----- Original  Message ----
> From: Kok Chen <chen at mac.com>
> To: RTTY Reflector  <RTTY at contesting.com>
> Sent: Tue, January 11, 2011 12:05:40  AM
> Subject: [RTTY] Funny signal
>
> I came across a funny signal during  the Roundup.  It was another S&P
> station,
> and it didn't hang  around for long enough for me to get a fix.  The FSK
> shift
> appeared  to be very narrow, more like 50 Hz than 170 Hz.
>
> So, if you'd S&P  without getting too many replies, check your shift.
> (Omni V
> and VI  were notorious for producing way off frequency shifts when 
> operated
> in
> FSK  -- their shifts were controlled by a trimmer capacitor.)
>
> 73
> Chen,  W7AY
>
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