Per usual, I am late responding (I receive the list by digest about
2-3 times/day):
First off, I am not a HF contester or DXer, so my use of CW is casual
(avoid when the former activity is present). I bought the 8-pole
filters: 2.8-KHz and 400-Hz. The former because I run diversity on a
KRX3 (which only has the 2.8-KHz). I figured the steeper filters
would be valuable for resale (if that ever came to happen). I also
bought the 13-KHz filter for FM (on VHF using transverters; also
works on 10m & 6m). The 13-KHz is installed for AM.
I have found in the very little CW operation on HF that I actually
like tuning around with DSP bw = 500-Hz or wider. Once settled on a
particular CW signal bw can be reduced to 400-Hz for quieter band reception.
The only time I run CW at very narrow bw (typ. 100-Hz) is for CW-eme
signals (very weak). I find those signals using a water-fall display
(using either MAP65 display or Spectravue). Usually tune them with
wider bw until exactly at the pitch I desire and then reduce DSP bw
to enhance signal readability.
Since you are a DXer, I suspect the 400-Hz 8-pole might give you a
slight edge over the 500-Hz 5-pole in a crowded band (especially if
you have close neighbor stations also vying for the DX). Then the
new SYNTH ought to help a lot.
My two cents observation from a non-expert.
73, Ed - KL7UW
Date: Sat, 7 Mar 2015 18:10:59 +0000
From: Richard Gillingham <[email protected]>
To: "[email protected]?=" <[email protected]>
Subject: Re: [Elecraft] Contemplating Purchase of K3
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Many thanks for the recommendations. The consensus is overwhelmingly
for the 400 KHz filter. I?m primarily a DXer, and most of what I
work is on CW. So? That will be on the list.
Thanks again to all
73
Gil, W1RG
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[email protected]
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