From: "George Johnson" <w1zt@attbi.com>
To: <rtty@contesting.com>
Date: Thu, 30 May 2002 11:59:49 -0400
Bill et al,
The 756 PRO permits adjustment of the SSB DSP filter bandwidth down to
50 Hz. However the "center" frequency is fixed at 1500 Hz. I use this
method for RTTY and select about 500 Hz for contests and 300 Hz when
things get really tight. It works fine as long as the center frequency
is observed. I bought the PRO originally thinking that the center
frequency was also adjustable but that is not the case.
But it is just not the same as being able to selectively tune to a
station and use a narrow passband at that particular frequency. That
would be ideal and is needed for effective PSK operation "in the real
world".
Any PRO II users out there able to shift the filter center frequency??
George .. W1ZT
Nope, they didn't fix that. However, if you use MIX, you can define a
key that simutaneuosly shifts the radio frequency so the PSK31 signal
you've selected is at 1500 Hz in the passband and narrows the filter
to 50 Hz. This doesn't help for split, but...
73, doug
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