[Elecraft] K2 CW Keying Wave Shape

Thu May 1 16:13:01 2003

The K2 needs time constant changes. Mine is like the one posted on INRAD. I think others will find similar results when they check.

It is not as noticeable for K2's because there are so many running QRP. That's ~25 db below 1.5 kw. The extra 25 db would make it PLENTY noticeable. Particularly in a CW contest where the next contestant is only 500 Hz above or below. That's CLOSER than the 1000 Hz measurement you quoted.

73, Guy.

> 
> From: [email protected]
> Date: 2003/05/01 Thu PM 03:10:24 EDT
> To: [email protected]
> Subject: [Elecraft] K2 CW Keying Wave Shape
> 
> I was looking at the International Radio web site <A HREF="http://www.inrad.net">http://www.inrad.net</A> and 
> saw the comparisons of the CW bandwidth at 1 Khz either side of the carrier 
> frequency among some of the transceivers.  It looks as if the mod made to the 
> original (unmodified) version of the FT-1000MP resulted in a significant 
> improvement implying that key clicks are reduced.  The unmodified MP is down 
> 62 dB at +/-1kHz and the modified MP-2 is down 72 dB at +/-1kHz.  Using the 
> same test parameters the K2 was down 54 dB at +/-1 kHz.  This is comparable 
> to the Omni VI+ which is down 56 dB at +/-1 kHz. Some on the reflector have 
> commented about the excessive Omni VI+ key clicks.
> Bottom line,  Is everything up to date in Kansas City or does the K2 need 
> time constant changes?      
> Roy  W4WFB
> 
> 
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73, Guy
K2AV