TopBand: Follow-up on Topband Receiver Survey

Earl W Cunningham
Mon, 09 Feb 1998 12:36:36 EST

On Mon, 9 Feb 1998 12:26:19 -0000  Peter Chadwick
<> writes:

>One question I'd like to see answered on rigs is why all the modern
commercial >transmitters seem to be so bad on key clicks?  Look at the
keying waveforms >in QST and the spectral displays in Radcom, and you can
see that they seem >to have been designed for 60 or 70 wpm - with the
concomitant clicks. Very >antisocial - like the worsening phase noise
specs. A Johnson Ranger II was far better than some of the modern
>Peter G3RZP
Good point, Peter,

I've noticed a growing number of key klix on 160m, but never jumped to
conclusions, feeling that my receiver might be the reason because there's
also a growing number of strong signals on the band.

When viewing some of those fast rise/fall time CW keying waveforms in the
QST reviews I often wonder if the rig would produce klix.  A notable
example is the keying waveform of the FT-1000MP (figure 2, page 71, April
1996 QST).  The first dit looks click-producible, the second dit, maybe

Perhaps other Topbanders might want to comment.

73, de Earl, K6SE

You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at
Or call Juno at (800) 654-JUNO [654-5866]

FAQ on WWW:     
Administrative requests: