ah HA !!
so, if I want a 2 khz wide CWU filter for tuning dead bands for weak signals,
and set low to 100 hz and high to 2100 hz, i MUST set the cw pitch to 1100 hz ?
ok. except now i am 'married' to a pitch a bit too high for personal
preference with narrower filters.
so, like Cher told her last boyfriend?
"get over it...."
73, w5xz, dan
--- On Tue, 9/6/11, Tim Ellison, W4TME <t...@flex-radio.com> wrote:
From: Tim Ellison, W4TME <t...@flex-radio.com>
Subject: Re: [Flexradio] Flex makes a great CW radio
To: "dan edwards" <w...@att.net>
Cc: t...@flexradio.com, "K9DURRay" <k9...@rnacs.com>, flexradio@flex-radio.biz
Date: Tuesday, September 6, 2011, 1:39 PM
Now this is a different issue. Thanks for
describing it in detail.
CW filters, like DIGx filters are dependent on "center frequency.
For CW it is the Pitch Frequency (or the click tune offset for
DIGx). The filter's low and high cut values will always auto
correct so that the the filter's center frequency is the CW pitch
frequency (or the DIGx click tune value) no mater what you set the
high and low cut skirts.
So in the filter definition form, if you set the low and/or high
cut settings to say 1000 and 400 respectively, you are defining a
600 Hz filter 1000-400=600). But if your CW Pitch frequency is
600 Hz, this newly defined 600 Hz filter will not have a center
frequency of 600 Hz (the pitch frequency), so PowerSDR auto
corrects the high and low cut values so that this newly created
600 Hz filters will center itself on the CW pitch frequency and
the new high/low cut values are 900 and 300 Hz.
This is the behavior you are observing.
It does not behave like this for phone modes.
-Tim
---
Tim Ellison, W4TME
Product Management, Sales & Support
FlexRadio Systems™
4616 W Howard Ln Ste 1-150
Austin, TX 78728
Phone: 512-535-4713 Ext. 223
Email: t...@flexradio.com
Web: www.flexradio.com
Tune In
Excitement™
PowerSDR™ is a trademark of FlexRadio Systems
On 9/6/2011 9:04 AM, dan edwards wrote:
not here...change bands, modes, nearly
anything...the width is correct, but the
high and low are shifted down 400 hz ( to
the other side of zero beat )
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