Bob and others interested,
I put several jpeg clips of the filter measurements up on my web site at -
http://www.pixos.com/designs/Filters/
When I view them, I need to click on a little "expand" button that comes up
in the lower right hand corner of the graphic in Internet Explorer to get a
clear graphic.
They speak for themselves
Jerry, W6IHG
At 07:58 AM 2/24/2004 -0600, you wrote:
Jerry,
Can you share your findings?
-Bob
> ------------Original Message------------
> From: Jerry Pixton <jpixton@shentel.net>
> To: writelog@contesting.com
> Cc: rtty@contesting.com
> Date: Tue, Feb-24-2004 6:25 AM
> Subject: Re: [WriteLog] Measuring filter bandwidth
>
> All,
>
> It works great!
>
> Jerry and I spent Sunday (while the CW signals "invaded" the rtty bands)
> quantifying the various filters and their shapes available on his IC756
Pro
> and my IC756 Pro II. I now have the numbers to back up my subjective
> decision to start using the LSB-D filters for rtty, instead of the regular
> RTTY filters or the Twin Peak rtty filters.
>
> Jerry, W6IHG
>
>
>
>
> At 03:12 PM 2/23/2004 +0000, Jerry Flanders wrote:
> >In the thread: Re: [WriteLog] AFSK on RTTY not LSB on 1000mp field,
> >At 08:09 2/23/04, Jim Smith wrote:
> >
> >>.
> >><snip>
> >>Have you actually checked the bandwidth of the filter(s) selected by
your
> >>Nar1 when in RTTY mode? If you do get 500 or thereabouts for Nar1 and
> >>250 or so for your Nar2, the next thing is to figure out how you're
doing
> >>it. <SNIP>
> >>
> >>73 de Jim Smith VE7FO
> >
> >
> >
> >It is easy to check your passband performance (BW, slope, etc) if you
have
> >a sound card connected to the radio's output, as most of us do.
>
> ------------------------------------------
> Dr. Jerry R. Pixton, PIXOS Designs LLC
> http://www.pixos.com/designs/RadioTuner/
> jpixton@shentel.net
> ------------------------------------------
>
>
> _______________________________________________
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> WriteLog@contesting.com
> http://lists.contesting.com/mailman/listinfo/writelog
> WriteLog on the web: http://www.writelog.com/
>
------------------------------------------
Dr. Jerry R. Pixton, PIXOS Designs LLC
http://www.pixos.com/designs/RadioTuner/
jpixton@shentel.net
------------------------------------------
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