[Elecraft] Re: K3 Key-down on power-up [Solution?]

[Joe Subich, W4TV]

Wayne, 

It is a good idea ... particularly if you get closures on any of the 
inputs that would force transmit when first powering up.  In particular,

you would want to look for PTT on mic, PTT/RCA, PTT/ACC, or RTS) and 
CW inputs on DTR, key, left paddle or right paddle.   

Yaesu does a similar thing in most of their recent radios.  If the 
PTT or Key is active at power up, the radio will not transmit until 
the PTT/Key has first opened (reset).  The only thing is that they 
do not display an error message ... 

73, 

   ... Joe, W4TV 
  


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of wayne burdick
> Sent: Saturday, June 28, 2008 11:05 AM
> To: gibson at alma.edu
> Cc: Elecraft Reflector
> Subject: [Elecraft] Re: K3 Key-down on power-up [Solution?]
> 
> 
> This is another way of describing what I'm proposing, John. 
> If /KEY is 
> found asserted anytime during the 2-second power-on sequence, the K3 
> might show "ERR KEY" and prevent TX until the line as been 
> released. If 
> re-asserted anytime after that, the message would go away by itself, 
> and TX would proceed normally.
> 
> I can catch premature /PTT assertion, too. So there would also be an 
> "ERR PTT" message. Same logic.
> 
> Sound OK?
> 
> 73,
> Wayne
> N6KR
> 
> On Jun 28, 2008, at 6:58 AM, John H Gibson wrote:
> 
> > Wayne,
> >
> > Instead of using an intial time delay, why not force the K3 to wait
> > for a high-to-
> > low transistion on the key line before it first transmits?
> >
> > 73,
> > John, no8v
> >
> 
> ---
> 
> http://www.elecraft.com
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