I am glad someone has brought this up.
A common problem I have noted is a spike about 1.4 kHz below the mark
frequency. This is very common on signals. I cannot say they are
distorted, but wonder about the cause. I have asked many times about the
quality of my signal and I always get "great", but when pulsed, it appears
that if they can get 100 pct copy they assume the signal is perfect.
So, perhaps someone can help me on the typical source of the 1.4 kHz spike.
I have always assumed it was due to overdriving the audio in AFSK, but that
is only an assumption.
Don/AD0K
Buda, TX
-----Original Message-----
From: rtty-bounces@contesting.com [mailto:rtty-bounces@contesting.com] On
Behalf Of Ekki Plicht
Sent: Tuesday, August 24, 2004 10:31
To: rtty@contesting.com
Subject: Re: [RTTY] Distortion
On Tuesday 24 August 2004 11:54, Shelby Summerville wrote:
> "Schulz Jonathan" <jonathan.schulz@siemens.com> wrote: "I set up RTTY
> with the help of AA5AU's webpage, and believe I am putting out an
> acceptable signal, my question is IF I wasn't would you guys tell me?"
>
> A question that I have asked, numerous times, with only few answers! I
> would feel very disappointed if I had a distorted signal, or any of
> the other problems that have been described, and no one told me! I
> would suspect that 99.9% would feel the same way?
I wish it were so.
Most times when I have told someone that his or her RTTY or PSK31 signal was
distorted, had spurious side emissions etc., I got very rude replies, from
"get a better receiver" to much more offensive remarks.
Without wanting to be too specific I think it's a trait more commonly found
on this side of the pound then on your's, Shelby, hi.
73,
Ekki, DF4OR
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