I have operated a number of the 'big' CW contests. I have heard some
really, really wide sigs with horrible key clicks. Yes they were
strong.... but 10 KHz wide? Rob Sherwood and others have written about
this. Some of the really high-end rigs (non-Elecraft) allow user
adjustment of CW rise time to such short values that key clicks are
guaranteed. Yech!
-de John NI0K
Fred Jensen wrote on 6/6/2020 7:05 PM:
True. TXDelay is a sequencing parameter to assure that downstream
switching has completed before RF appears. The keying waveform
[particularly the edges and "corners"] affect the sidebands and thus
bandwidth of the CW signal. I don't believe QSK has anything to do
with it, at least for a K3.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 6/6/2020 4:55 PM, N4ZR wrote:
There's a big discussion going on in contesting circles online about
the problem of key clicks. There's been a lot of discussion about
settings called things like TXDelay, but so far as I can tell (and
the manual confirms), the K3's TX delay is intended to protect
amplifier relays at the start of a transmission. So long as you
don't run QSK, I would think that setting would have no influence on
key clicks after the rise of the first CW element. True?
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