[1000mp] RE: RTTY/250hz Filter shift

[Bryan Preas]

I suspect that you have menu item 6-5, Packet Tone Frequency, set to 
2125.  This menu
item sets the center frequency of the received packet tones.  Change it to 
2210 and the
received AF will be centered in the normal 2125-2295 mark/space range.

If you have the receive auto connected to your sound card input, you can 
see the
received frequency shift as you change the 6-5 menu parameters.  I use
Spectrogram (a FB shareware program) to view the AF spectrum.

Bryan
AC6JT


___________________________________________________


From: "Blake Meinecke" <n4gi@tampabay.rr.com>
To: <1000mp@mailman.qth.net>
Date: Sun, 22 Dec 2002 13:40:29 -0500
Subject: [1000mp] RTTY/250hz Filter shift?

Noticed yesterday during OK RTTY that have to turn SHIFT knob to about
1oclock for my MKV to be centered on RTTY sigs when in NAR2 (both inrad
250's).

Sigs are centered FB with no SHIFT adjustment when in NAR1 (stock 500 and
400 inrad).

Could have sworn that I didn't have to do this the last time I worked RTTY,
but I could be wrong.  What's the story?

Blake N4GI