Login  Register

Re: Default K3 transmit delay may be too short for slow QRO amplifiers

Posted by wayne burdick on Jun 08, 2018; 2:33pm
URL: http://elecraft.85.s1.nabble.com/Default-K3-transmit-delay-may-be-too-short-for-slow-QRO-amplifiers-tp7641790p7641795.html

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, "[hidden email]" <[hidden email]> 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
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]