[Elecraft] Running stations with k3

Tue Sep 20 23:24:36 EDT 2016

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 <ron at cobi.biz> wrote:

 Subject: Re: [Elecraft] Running stations with k3
 To: "'F5vjc'" <foxfive.vjc at gmail.com>, "'Guy Olinger K2AV'" <k2av.guy at gmail.com>
 Cc: "'Elecraft Reflector Reflector'" <elecraft at 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-bounces at 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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