[1000mp] Data filter choice

Sat, 28 Feb 2004 20:19:11 -0500

I use the 250 filters on PSK31 in crowded conditions or unfortunately, when
somebody is overdriving and splattering.  Very effective.  I also turn off the
AGC to eliminate AGC pumping on the weaker signals and sometimes turn on
IPO.   Its amazing to see 3 or 4 distinct and copiable signals within a 250 Hz
window on the waterfall - if needed, shift and width can knock out some of the
remaining signals.

If you want to see how effective the filtering is, use the PSK waterfall on
some very strong signals and tune around, turning one of the filters on and
off in the 5-x menus.

73,  George  VE3YV / K8HI

Jim McDonald wrote:

> John,
>
> I suggest a pair of 250s for RTTY, which is what I use.  I'm not a regular
> PSK op, but most PSK is done with sideband filters, tuning with the PSK
> program instead of the VFO.
>
> Jim N7US
>
> ----- Original Message -----
> From: "Vermilyea, John" <[email protected]>
> To: <[email protected]>
> Sent: Saturday, February 28, 2004 4:04 PM
> Subject: [1000mp] Data fiters
>
> What width Inrad filters would be recommended for the Mark V Field for
> data, RTTY, PSK31? I have added a pair of 1.8 KHz and a 500Hz filters to
> the receiver and would like fill the filter lineup for NAR2. I do not
> operate CW. John K3YS
>
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