[Elecraft] K3 PTT RLS

[Don Wilhelm]

Chuck,

OK - I was responding to the original stated concern that RF might still 
be present when the amp relay drops (at least that is how I interpreted 
the original question) - and that is what will not happen.

As far as not having the amp relay drop out between words at 30 WPM, 
that is a different matter.  Most QSK operators like to hear between 
words (or some even characters), and that would not happen if the amp 
relay is still engaged (so they use fast relays or QSK options on the 
amp).  Semi-QSK is available on the K3 and the delay is adjustable using 
the DELAY knob on the front panel (see the manual page 30).  Remember 
that TEST mode is available and handy for setting the timing - KEYOUT 
and everything else works just like real transmit except that no RF is 
generated.

So in summary, TX DLY adjusts the leading delay and in semi-QSK the 
DELAY knob adjusts the tail.  You can have that type operation using the 
internal keyer in the K3 and devote the WinKey to use with the computer 
based apps.

73,
Don W3FPR

ni0c wrote:
> W3FPR wrote:
>
>
>   
>> Unless you can create a relay that drops out before its coil voltage is 
>> removed, I cannot ever see a problem here.
>>
>>     
>
> Don, the problem (solved by the K1EL PTT 
> output, with its programmable PTT "lead" and 
> "tail" times) is excessive relay chatter in non-QSK
> CW operations.  For example, I have the WinKey
> programmed for 20 ms lead and 180 ms tail times, 
> which provides smooth operation (no amp relay 
> dropout between words) at the speeds I normally 
> operate.
>
> I haven't tried keying my amp yet using the K3 PTT
> simply because I wasn't aware of a programmable
> "tail" time.  BTW, I just checked the PTT RLS feature
> (I'm using the latest Beta FW, 3.10), but the dial ranges
> from 0 to 30 only-- I presume this is in milliseconds.)
>
>
> 73,
> Chuck  NI0C   
>   
>