[Elecraft] Key Clicks

Mon May 5 10:19:01 2003

Your K2 is somewhat better than mine, but in the same neighborhood.

We have to remember that in the world of 500 Hz CW contest spacing
that +/- 300 Hz belongs to our neighbor, not us.

Wayne et al have promised to look into it after Dayton.

73, Guy.

----- Original Message ----- 
From: <[email protected]>
To: <[email protected]>; <[email protected]>;
<[email protected]>
Sent: Sunday, May 04, 2003 11:32 PM
Subject: [Elecraft] Key Clicks

> I just finished measuring the CW bandwidth of my Elecraft K2 using
the
> exact same test setup as when I measured the CW bandwidth of my
Yaesu
> FT-1000MP.
>
> Test setup:
>
> Frequency: 1825.00 kHz
>
> Transmitting dits at 28 wpm into a 50-ohm dummy load
>
> Receiver: TS-830S on CW-N (250/200 Hz filters in the first/last IFs)
>
> The power transmitted into the dummy load was adjusted so that the
> TS-830S's S-meter was S9 (~100 uV) with a steady carrier.
>
> The procedure used was to gradually tune the receiver off-frequency
until
> the transmitted clicks were just barely audible (another 100 Hz and
they
> would be gone).
>
> Over a year ago I tested my FT-1000MP using the exact same setup.
>
> Before any keying modifications, the CW bandwidth of the MP was +/-
2100
> Hz.
>
> After the INRAD "Keying Improvement" mod, the CW bandwidth was +/-
800
> Hz.
>
> After the W8JI click mod, the CW bandwidth was +/- 300 Hz.
>
> The CW bandwidth of my K2 is +/- 1500 Hz.
>
> Although I have the KPA100 amplifier, it was removed for the click
test.
>
> I had heard that the K2 had a "slight" problem with clicks.  I was
> surprised to see that it is almost as bad a stock MP.
>
> I guess it's time for someone to develop a click mod for the K2.
>
> 73, de Earl, K6SE
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