[ICOM] Best filter for 706 SSB

Ken Winterling wa2lbi at frontiernet.net
Fri Feb 3 13:06:50 EST 2006


I find that the 350 HZ  filter,  FL232 I believe, is a good compromise
between the 500 and the 250.

Ken, WA2LBI


On 2/3/06, jrhallas at optonline.net <jrhallas at optonline.net> wrote:
> Tom,
>
> I use the 1.9 (or is it 1.8) kHz filter in mine and it works great when
> conditions warrent. Of course, the stock 2.4 is available when copy is
> "armchair" quality, just a push of the "FIL' menu button. The narrower
> filter is somewhat restrictive, but just what you need if near-in QRM is
> trouble.
>
> A second benefit is that the 1.9 filter becomes the standard filter in CW
> mode. It really helps there as well. I also have the 250 Hz, but if I did
> it again, I think I would do the 500 Hz since it's easy to tune by folk, or
> lose them when reducing BW with the 250.
>
>
> Original Message:
> -----------------
> From: Tom Crawford TMCsail at sbcglobal.net
> Date: Thu, 02 Feb 2006 20:47:49 -0500
> To: icom at mailman.qth.net
> Subject: [ICOM] Best filter for 706 SSB
>
>
> I need better signal to noise on the my IC706 mkIIg.
> 75m is where I really need to lower the noise floor.
>
> Which filter would be the best choice? I want to keep nice sounding audio
> though.
>
> My puzzle is that it is my understanding that the "no-filter" bandpass of
> the 706 is ~2.4 kHz.
> The FL-103 is a 2.8 kHz filter. Is that one going to offer ANY improvement?
> The FL-223 is a 1.9 kHz filter. Does this filter close up the audio too
> much?
>
> Comments appreciated.
> 73 to all
> Tom, W3TMC
> ----


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