i have a 400 hz filter for CW in the ic756 and 500 hz for the Orion ...they
are so different i am amazed. the Orion filter is wonderfully clean, no
ringing at all ...and the signal jumps out ...can hardly listen to the 400
hz (International filter) which is better than the Icom 500 it replaced in
that radio ...with one such filter and BW/PBT going i can't imagine needing
to cascade more filters. jack ak7o
----- Original Message -----
From: "Ben K8DIT" <benk8dit@serv.net>
To: <tentec@contesting.com>
Sent: Thursday, November 20, 2003 12:19 AM
Subject: Re: [TenTec] Omni VI+ filters
> I agree, in fact that's what I did. I listen to cw with the 1.8khz/6.3mhz
> filter and upon finding a signal that needs filtering help I then engage
the
> 500hz/6.3mhz filter, if it needs more, I engage the 1.8khz/9mhz filter and
> then if I need more I switch to the 250hz/6.3mhz filter with the
1.8khz/9mhz
> filter engaged/cascaded. But wait, there's more! Then hit the lpf to get
the
> high noise off and then hit the dsp button. Now, that signal is way up off
> the deck and as long as I have signal, I can copy.
> My guess is that anything narrower and my single narrow slot wouldnt be as
> versatile were it a 500hz or narrower. With the 1.8khz filter in the
narrow
> slot, its just wide enough to cascade with the 2.4khz/6.3mhz
> filter in ssb. I did have the 2.4khz/9mhz filter in there which affected
ssb
> nicely, but wasnt all that helpful for cw. The 1.8khz/9mhz narrow filter
is
> just right for me.
> I carried that technique over to the Jupiter and I found it worked nicely
> there as well, but there's no cascading option. On the Jupiter its not
> really needed as you have narrowed both IFs digitally anyway, or so it
> seems.
> Then hitting the dsp its as though you hear it thru a dijeridoo. Sounding
> fine.
>
>
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