[Elecraft] K2 and CW

[Kevin Rock]

Good Evening,
    While I am running the nets I think I may miss someone if I run closed  
down.  I normally use a setting of 1.0 kHz and go to 1.8 kHz if I am  
seeking off frequency.  I have an Icom with a 250 Hz filter and it sounds  
odd to me.  How would I know if there is someone right next door calling  
me?  I'd much rather hear the babble of others than miss someone calling  
me.
    One time I was recording my contact with a friend to see how poorly I  
was sending.  I knew I was ignoring another operator nearby.  When I  
rewound the tape and played it back I copied five different stations.  I  
had ignored four of them without realizing it.  I guess they just weren't  
calling me so my mind tuned them out.
    While I do have my K2 set up with 1.8, 1.0, 0.5, and 0.25 kHz filter  
settings I rarely use the third and fourth settings.  Missing someone is  
not what I intend to do.  Good grief, they may teach me something!
    Kevin.  KD5ONS




On Sun, 08 Apr 2007 19:19:34 -0700, Ron D'Eau Claire  
<rondec at easystreet.com> wrote:

> I can't speak about the 718 or the Elecraft DSP, but in my experience  
> such
> "brick wall" filtering creates far more problems than solutions. A huge
> amount of unwanted stuff is produced by signals on the sharp edges of  
> such a
> filter that appear throughout the passband - much of it is that 'noise'  
> you
> mention.
>
> I work 99% CW and my K2 is seldom set for less than 1.0 kHz bandwidth. My
> minimum is 0.4 kHz used only when I get a "loudmouth" shouting from  
> almost
> on top of the signal I'm copying. That occasionally happens during a
> contest, but that's about it.
>
> I do have a skill that a great many experienced CW ops have that might be
> the difference. We can copy easily with several signals within the  
> passband.
> It's like listening to one voice in a crowded party; we just "tune out"  
> the
> other babble going on around us unless it's something we want to follow.  
> It
> only gets difficult if one nut starts shouting in my ear when I'm trying  
> to
> listen to someone else, Hi!
>
> Ron AC7AC
>
>
>
> -----Original Message-----
>
> Hello
> I haven't had my K2 (# 5846 ) long enought to fully understand all the
> different settings that are possible with it , so I have a question. My  
> CW
> filter setting are FL-1 1.50, FL-2 0.70, FL-3 0.40, and
> FL-4 is 0.10. Even FL-4 is no where near as effective as the 250 hz  
> crystal
> filter in my Icom 718. When I turn on the 250 hz filter in the Icom, it's
> like building a wall right on each side of the signal that I am listening
> to. Nothing else is heard except noise and signals that are exactly on  
> the
> same frequency. Is this kind of selectivity possible with the K2? If I
> installed the DSP option would that help? And if so, what would the  
> filter
> settngs need to be? The only options I presently have are the 160 meter
> option, noise blanker, serial adapter, ssb option, and the KPA100. Thanks
> Scott N5SM
>
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