RF coming into the radio on the FSK line will cause a steady mark or
space tone. I experienced this some contests ago when using my amplifier.
I now wrap the FSK cable(s) around a ferrite rod on the radio end and around
a ferrite donut on the computer end.
And now I'm doing dual transmit on one computer and use a "Y" connector
on the FSK input to the radio, so that's more of a possibility of getting RF
into
the radio. Use ferrite rods and donuts on, not only your FSK input, but also
on your keyboard when using high power. I've never experienced any of these
problems low power - another reason low power is more fun!
73, Don AA5AU
----- Original Message -----
From: "Bill Brooks" <ke5og@brooksdata.net>
To: <writelog@contesting.com>
Sent: Monday, January 07, 2002 5:54 PM
Subject: Fw: [WriteLog] I had a small problem
> I had a similar problem. The same problem I have posted several times
> before. Sometimes it would be a steady tone, other times the RTTY receiver
> (MMTTY) would just quit responding. I could close the RTTYRite window and
> re-open it and all would be well. It ALWAYS occurred after sending CQ a few
> times. I have had this problem for several months. For this weekend, I had a
> different computer with a different sound card and an FSK interface instead
> of a RigBlaster. But, it still did it. Now I'm thinking RF coming in on the
> sound card line input. Any ideas?
>
> Bill, KE5OG
>
> ----- Original Message -----
> From: FireBrick <w9ol@billnjudy.com>
> To: Writelog List <writelog@contesting.com>
> Sent: Sunday, January 06, 2002 9:52 PM
> Subject: [WriteLog] I had a small problem
>
>
> > Did anyone else have a problem like this?
> > Only way I know to determine if it was my setup or something else.
> > Running the latest version of WL. 1 kw amp driven by a MP.
> > On a 900mHz machine running XP.
> > MMTTY in FSK mode, transistor interface on Com 1.
> >
> > After numerous non reply cq's.
> > Then I got a reply, I would hit the F key to send the report to the
> calling
> > station.
> > But I would get a steady tone for a few seconds. Hitting Escape which
> > normally aborts a buffer did not work.
> > After a few seconds, the proper buffer would start and subsequent buffers
> > would work properly.
> >
> > This anomaly would ONLY occur after a number of cq buffer messages.
> > I never really counted but at least 8 to 10 consecutive cq's would result
> in
> > that steady tone.
> > I did not experience the anomaly with just a few consecutive cq buffer
> > transmissions.
> >
> > I kind of hope someone else experienced this so I don't have to start
> > troubleshooting my system.
> >
> >
> >
> >
> > ------------------------------------------------------------
> > "We are not without accomplishment. We have managed to distribute poverty
> > equally."
> > ------------------------------------------------------------
> >
> > Bill H. in Chicagoland
> > w9ol@billnjudy.com
> >
> >
> > _______________________________________________
> > WriteLog mailing list
> > WriteLog@contesting.com
> > http://lists.contesting.com/mailman/listinfo/writelog
> >
>
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