The K3's TX DELAY parameter, set to 20 ms, is adequate to prevent most old T-R
relays from hot-switching. I'm using mine with a 6M-converted SB-220 that is
still using the original frame relay. I've been assured by Elecraft that this
parameter provides KEY OUT delay during VOX usage as well as during PTT usage.
Bill W5WVO
Mike Harris wrote:
> G'day,
>
> I've used VOX to key my K3 when using WSJT67 on 6M eme and RTTY
> without ill effects. However, my Acom 1000 switches very fast,
> older amps might just hot switch. I now use PTT from the PC having
> made a cable that has the appropriate control lines rather than the
> original K2 cable which didn't.
>
> Regards,
>
> Mike VP8NO
>
>
>> Actually, it could be easier and cheaper: use VOX instead of PTT.
>> When the
>> sound card generates a sound, the K3 transmits it. Of course, this
>> implies that
>> you have to be careful to suppress all other generators of sound
>> card noises --
>> from the OS and other apps. So that is a potential downside to
>> using VOX, but
>> I've found it to be fairly easy to ensure this doesn't happen.
>>
>> Bill W5WVO
>>
>>
>> Dave G4AON wrote:
>>> Forgot to mention, the PTT is courtesy of the serial cable
>>> normally used to program/control the radio.
>>>
>>> Couldn't be easier or cheaper.
>>>
>>> 73 Dave, G4AON
>
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