[Elecraft] K3 for CW

Edward R. Cole kl7uw at acsalaska.net
Thu Jul 5 14:08:00 EDT 2012


At the risk of being repetitive, I chose the 2.8 KHz and 400-Hz 
8-pole filters for my main Rx and 2.8 for my sub-Rx.  I run CW on VHF 
and up so "crowded band phenomena" is rarely encountered.  On eme it 
is never seen.  But I reasoned having the steeper skirts would be 
handy for HF-SSB and cascading the 400-Hz with the DSP at 100-Hz 
might net a slight improvement with super-weak CW on eme.  I find the 
400-Hz filter is narrow enough to make tuning for CW difficult enough 
(usually tune in 2.1-DSP and narrow down once on freq.).  I added a 
13-KHz filter for running VHF-FM on the main-Rx (works nice on BC am).

I bought the dual-bw filter for the KX3 figuring it might make 
difference in reception with the direct-conversion SDR.  It appears 
to switch in at about 2.35 KHz. I can hear the change in band noise 
with it in.  I have not spent enough "play" time to come up with 
optimum menu settings (most still the original).

Today is semi-annual shack cleaning day (also wading into the "rats 
nest" of wires behind the console in preparation for hosting a "shack 
tour" at the end of our local hamfest in a couple weeks.  Now that I 
have the KX3 and all my new transverters installed, I can accomplish 
a more "permanent" wiring hookup!  (nothing in my shack is permanent!)

 From overcast, 50F, with gusty winds (in Alaska),


73, Ed - KL7UW, WD2XSH/45
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