[Elecraft] K3 PTT -- done!

[gw0etf at btinternet.com]

Don wrote the  following:
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Joe  and all,

I have the same questions.

Since no one has explained the  difference between 'Transmit mode' and 
"the K3 is now transmitting since QSK  has been started with a keypress" 
- I would believe that the PTT input is  redundant when in QSK or 
Semi-break-in modes.

Yes, a little  clarification (or language lessons) seem to be appropriate 
here.
How is  'Transmit mode' different from 'transmitting already because the 
key was  tapped'?
Does closing PTT when in QSK mode inhibit a return to receive until  the 
PTT is released? - that is the only thing I can think of.

It  certainly seems that the generation of RF is controlled by the 
paddles in  any case (except for the new TX inhibit condition).  A few 
things were  clarified, but confusion still reigns high in my mind.

73,
Don  W3FPR
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 Am I missing something or is this PTT stuff simply the same as MOX (in a  Yaesu)?
 Pressing MOX is the same as pressing the PTT and holding it there  until switched off. TX light is on, RX is muted (ie "Transmit Mode") and hitting  the key will transmit RF - it overrides both QSK and VOX. MOX will only actually  put out RF of it's own accord in AM or FM modes that involve a carrier.
  
 In QSK, both MOX and VOX are disengaged and "Break-In" is switched in. Now  hitting the key simultaneously kicks in the PTT and transmits RF but only for  the duration of the key press.
  
 I thought this is pretty standard stuff and would assume the K3 would more  or less follow this protocol. But as I say maybe I've missed something subtle in  the discussion in which case I'll apologise and go back to sleep.
  
 73,
 Stewart Rolfe, GW0ETF