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 <[email protected]> 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 <[email protected]> wrote: > > Subject: Re: [Elecraft] Running stations with k3 > To: "'F5vjc'" <[email protected]>, "'Guy Olinger K2AV'" > <[email protected]> > Cc: "'Elecraft Reflector Reflector'" <[email protected]> > 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:[email protected]] > 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 > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
