Confused.....What is FIR vs. IIR? Can't find it in the manual. When you say
"just these two bandwidths"...I thought the FLxBW settings were for the
crystal filters, not the DSP so how do you change this setting for 50hz when
it's not even a filter in the menu? Since I have the 200hz filter in slot 4,
do I change it to IIR on?
Steve Ellington
[EMAIL PROTECTED]
----- Original Message -----
From: "Vic Rosenthal" <[EMAIL PROTECTED]>
To: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Tuesday, May 27, 2008 2:01 PM
Subject: Re: [Elecraft] K3s in WPX M/S - WOW!
Bob Evans wrote:
I
never thought I'd be so happy with a 150 Hz filter bandwidth. Honestly,
the
100 Hz and 50 Hz bandwidths were useless though as the signal level
dropped
significantly. It seemed much better a few firmware versions ago, but
150
Hz worked fine for us...I was just getting "greedy" by trying to use the
100
and 50 Hz BW.
I have just found out that there is a bug that causes a gain reduction
just for these two bandwidths if they are set for FIR filters and not IIR.
You can fix it now by switching IIR ON, and when Elecraft fixes the bug
you can choose either IIR or FIR for these filters as you prefer.
To switch between IIR and FIR, tap '7' on the keypad when you're in any
filter setup menu entry (e.g., CONFIG:FLx BW). You want it to say IIR ON.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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