[Elecraft] Clipping first element of CW - K3/KPA-1500

[K9MA]

I know this will seem incredible to the software purists, but I have an 
actual mechanical "switch" in series with the PTT line. The K3 is always 
in QSK mode, but if I get tired of all the racket, I can just turn on 
the PTT. That seems to work flawlessly with the KPA1500, as well as my 
old tube amplifiers. (There's another switch in the keying line, just in 
case the computer goes nuts. Of course, that could NEVER happen.)

73,
Scott K9MA

On 4/24/2019 08:14, N4ZR wrote:
> This appears to be, at least in part, a simple matter of RTFM.  Also, 
> my manual is 9 years old, and there's obviously been a lot of stuff 
> added since then. Experimentally, it appears that must have *both* QSK 
> on - whether Full or Semi - and VOX on.  Once I do this, I see my 
> first dots on the KPA-1500 bar-graph every time.  I do not want to use 
> the built-in keyer in the K3, because most of my operating is CW 
> contesting, and I want to use the Winkeyer to send stored messages 
> from N1MM +.  The manual makes it clear (if only I'd read it) that 
> both QSK and VOX must be enabled for CW. In PTT mode, it appears that 
> my keyer is sending the PTT signal simultaneously with the first RF - 
> not good.
>
> Thanks to everyone who helped put me on the right track.
>
> 73, Pete N4ZR
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> On 4/24/2019 8:49 AM, Bob McGraw K4TAX wrote:
>> See CW QRO and TX DELAY in the menu.  Also the benefits and likely 
>> issues are described in the manual, page 58 and 66 as MENU items.    
>> As to using other means to key the radio and amp and send CW, those 
>> may have their own settings as required.
>>
>> While I do not consider myself a high speed CW op, I do work QSK.   I 
>> do not find any truncation of the first CW element. I use the 
>> internal keyer and either a Vibroplex Iambic paddle or a Vibroplex 
>> single level paddle.  I have VOX set to ON, CW QRO is OFF and TX DLY 
>> to NOR and 008.
>>
>> Hope this helps.
>>
>> 73
>>
>> Bob, K4TAX
>>
>>
>>
>>
>> On 4/24/2019 7:34 AM, Andy Durbin wrote:
>>> "It occurs if the rising edge of the keying waveform happens at the 
>>> same time as the PTT line.  The ONLY way around this is to delay the 
>>> keying waveform slightly so it occurs after the PTT."
>>>
>>> That would seem to imply that you are not using CW VOX keying. If 
>>> that is the case then wouldn't using CW VOX eliminate the issue?
>>>
>>> 73,
>>> Andy k3wyc
>>>

-- 
Scott  K9MA

k9ma at sdellington.us