On 2018-06-08 10:53 AM, [email protected] wrote:
> Does computer keying with Winkey still perform properly with
> longer TX delays?
If you use the PTT output of WinKey with computer keying, the
delay is a non factor. Set TX Lead in WinKey as needed for
your amplifier and the WinKey keyer will assert PTT *before*
the CW output (key closure) by the desired value. Allowing
PTT to "lead" the output will not result in any character
clipping.
73,
... Joe, W4TV
On 2018-06-08 10:53 AM, [email protected] wrote:
I am sure that just adding a few ms will work with most amplifiers but my
question was what exactly happens to CW. Is it just the first dit that gets
clipped. Does computer keying with Winkey still perform properly with
longer TX delays?
John KK9A
Sent via the Samsung Galaxy 7 edge, an AT&T 4G LTE smartphone.
On Fri, Jun 8, 2018 at 10:48 AM, Wayne Burdick <[email protected]> wrote:
Also, a reminder: this is nothing new. We’re just clarifying a delay
offset that has existed for a long time. There have been no recent firmware
changes.
It would be possible to modify the K3’s keying algorithm to allow for much
longer delays (say, 0 to 200 ms). Of course this would significantly shift
CW RF output in time relative to keying input.
Fortunately, very few amplifiers require more that a few ms of extra
delay.
73,
Wayne
N6KR
----
http://www.elecraft.com
On Jun 8, 2018, at 7:33 AM, Wayne Burdick <[email protected]> wrote:
The delay can be set from 8-20 ms at present. Given the small time
offset, this is actually 5-17 ms (approx). Use small values if possible.
With external keying, you can generally compensate by reducing the
device’s weighting.
Wayne
----
http://www.elecraft.com
On Jun 8, 2018, at 5:02 AM, "[email protected]" <[email protected]> wrote:
I agree that 5ms is too fast for many amplifiers. Is computer sent CW
also
spoiled when increasing the delay? Does it only effect QSK or all
transmissions?
John KK9A
Igor Sokolov ua9cdc wrote:
Wayne it is a pity that TX delay setting affects CW timing. Changing TX
delay from default even one or two steps makes CW much worth. Can you
figure out a way to make CW timing independent from TX delay? With 5 ms
TX delay working in many contests I already had to change a pair of
relays in the amplifier. 10-12 ms would be fine for me. 20 ms will
probably suit the majority of users. But 5 ms is way too fast and
unfortunately cannot be altered without spoiling CW sending. I know that
I could build external sequencer but this does not look neat enough
especially for portable field operation. Every other radio I had allowed
TX delay adjustment to at least 20 ms.
73, Igor UA9CDC
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