Analog filters have phase delay. That would be stronger with a narrower filter. 
Also, the on-off CW signal has sidebands (the harmonics of the square wave). 
Maybe a narrower filter sounds “softer”? I have no idea what “full-bodied CW” 
means, of course.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Sep 20, 2016, at 8:24 PM, WILLIE BABER <wlba...@bellsouth.net> wrote:
> 
> It wasn't my term.  But I think "full-bodied" cw means a slightly wider I-F 
> to establish background noise that some ops want to hear, particularly if  
> the receiver has exceptional gain distribution and in-band IMD, which the 
> latest Icoms do have.  This gives articulation to cw signal outs of a quiet 
> back ground of noise, and so long as you are not dealing with an 
> exceptionally strong signal nearby, hard-wired fast agc can give relative 
> strength to the competing signals.  Then, a good cw op can pick out stations 
> actually easier than with a 400hz filter where RIT becomes more necessary.  
> Of course on the Icom radio there is no choice but to do this because 3khz  
> is the narrowest setting, though you could ask for more DSP filtering.   
> 
> So, here again, is what I mean:  set you K3 for 2.7khz and I-F DSP at 500hz 
> and tune in a s-9 signal.  Now engage your narrow cw filter (I can do 400hz, 
> 250hz, and 200hz).  Listen to the I-F back ground noise decrease relative to 
> the signal.  Notice too that  2.7 hz with 500hz of DSP sounds more 
> "full-bodied" than 400hz, 250hz, 200hz.   Of course, this is all good when 
> you are trying to hear a weak signal anyway as opposed to running a pileup of 
> stations.
> 
> My point is (or was in the discussion about this) if you like running 
> stations with an Icom you can enjoy running them in the same way with K3. But 
> what has to happen to the Icom radio when a signal like the one Guy describes 
> gets within the 3 khz roofing filter?  
> 
> On the k3 you can engage a 200 hz filter and carry on the east coast -EU 
> battle  If there is an advantage to contesting in Idaho it is that EU 
> stations from over the pole are seldom over s-9 and don't blink, you will 
> miss the EU opening, hi.  However,  I have seen east coast signals nearly peg 
> the meter of k3 a few times in 300z cwt.  
> 
> 73, Will, wj9b
> KX1, k2, so2r K3/P3
> 
> 
> CWops #1085
> CWA Advisor levels II and III
> http://cwops.org/
> 
> --------------------------------------------
> On Tue, 9/20/16, Ron D'Eau Claire <r...@cobi.biz> wrote:
> 
> Subject: Re: [Elecraft] Running stations with k3
> To: "'F5vjc'" <foxfive....@gmail.com>, "'Guy Olinger K2AV'" 
> <k2av....@gmail.com>
> Cc: "'Elecraft Reflector Reflector'" <elecraft@mailman.qth.net>
> Date: Tuesday, September 20, 2016, 6:03 PM
> 
> A very long time ago
> (1950's) we called 'em "California
> Kilowatts" knowing
> that their driver
> stages were running a kilowatt at least and then the big
> amp following... 
> 
> On A.M. (not so much SSB then) 100% modulation
> was a starter. 150% produced
> a nice splatter
> that told everyone across the band that you were "on
> the
> air". The same with CW using very
> square wave keying that announced your
> presence over many kc/s with clicks that
> allowed everyone to read your call
> and know
> that "Big Al" (or whomever) was on his key. 
> 
> They seemed rampant on 75 and
> 20 meters. 
> 
> So the
> geography has shifted, but not the crazy interests of some
> operators.
> 
> 
> BTW, if you are interested in a 15 kW H.F. amp
> check out the "Tsunami":
> 
> http://ta5fa.blogspot.com/2013/03/15kw-hf-rf-amplifier-tube.html
> 
> I'm sure that some
> operators would use it to drive a "big" final amp,
> Hi! We
> can hope they don't find a way.
> 
> 
> 73, Ron AC7AC
> 
> 
> 
> -----Original Message-----
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net]
> On Behalf Of F5vjc
> Sent: Tuesday, September
> 20, 2016 3:01 PM
> To: Guy Olinger K2AV
> Cc: Elecraft Reflector Reflector
> Subject: Re: [Elecraft] Running stations with
> k3
> 
> This is the degeneration
> of Amateur radio, yes really, it's true.  These
> signals from Eu are invariably the dirtiest
> worst you will ever hear on the
> bands,
> spewing crap all over the band.
> 
> Below...
> 
> 
> "The "full body" (whatever that
> means) CW technique will NOT work in a DX
> test I've been in (Will knows where) with
> that 45 over S9 Italian station
> running 15
> kW and a 4 element beam on 40m pointed at the US when the
> band is
> wide open, and who has parked 400 Hz
> above or below me, AND I am trying to
> copy
> an S0 (if even that strong) basement noodle antenna QRP
> station."
> 
> 73 F5VJC
> 
> 
> ______________________________________________________________
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