[Elecraft] Feature Request: improved internal keyer and CW PTT behavior

Vic Rosenthal 4X6GP k2vco.vic at gmail.com
Tue Feb 14 06:45:30 EST 2017


If Wayne will be tearing up the code in this area, it might not be hard 
to fix the problem that the internal keyer weighting is much heavier in 
PTT mode than in QSK or semi-QSK VOX.

73,
Vic, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

On 14 Feb 2017 12:50, Igor Sokolov wrote:
> May be Elecraft can also look at the 8 msec PTT delay which cannot be
> made longer without distorting CW. Some of the apmplifiers are not that
> quick.
>
>
> 73, Igor UA9CDC
>
>
> 14.02.2017 10:52, donovanf at starpower.net пишет:
>> Okay, lets take Eric's lead and open an interesting thread directly
>> related to an excellent Elecraft product.
>>
>>
>>
>> For years many of us have suffered with the odd behavior of the K3
>> in CW PTT mode. There are at least two inexplicble aspects of K3
>> CW PTT behavior that have forced many of us to use external
>> Winkeyers rather than the poorly designed internal K3 keyer logic
>> when the K3 is in CW PTT mode.
>>
>>
>> For CW contesters, its necessary to operate the K3 in PTT mode
>> to avoid unwanted VOX delay. But for some strange reason the
>> K3 always applies VOX delay after external PTT is unasserted.
>> I can think of no logical reason why VOX delay should be applied
>> at the end of the external PTT input when the K3 is PTT mode or
>> any other mode. When PTT is unasserted, the K3 should always
>> immediately return to receive mode, no exceptions.
>>
>>
>> When using the internal K3 keyer when in PTT mode, for some
>> inexplicable reason the K3 behaves like its in QSK mode. The
>> only way to avoid this is to use VOX rather than PTT mode or
>> to use a foot switch when in PTT mode. Both alternatives
>> are unacceptable.
>>
>>
>> The band aid solution many contesters use with excellent results
>> is to avoid using the internal K3 keyer and to use an external
>> K1EL Winkeyer that generates both a key output and a PTT
>> signal generated according to well designed Winkeyer CW PTT
>> logic.
>>
>>
>> Why can't the K3 implement logic similar to the Winkeyer to
>> generate the equivalent of "Winkeyer PTT" when using the K3
>> internal keyer when the K3 is in PTT mode?
>>
>>
>> 73
>> Frank
>> W3LPL
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>
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