Hi Hank,
That is a standard problem with RS232 ports when they have not been powered up 
before the K3. One solution is to go into your CW WGHT menu and tap the 4 key 
to select VOX AUTOOFF. This takes the K3 out of VOX mode when you turn the K3 
off so when you turn it on again it can't be keyed, either by the internal 
keyer, the back panel KEY IN or the RTS/DTR signals (the culprits) in the RS232 
interface. Then, after you power up the computer you can hold VOX to be able to 
send or transmit using VOX. The K3 will display VOX=OFF the first time you try 
to send without re-enabling VOX. I often program the power-on banner (using the 
K3 utility) to display VOX OFF.
Cheers and 73,
Fred
KE7X

Fred Cady
"The Elecraft K3: Design, Configuration and Operation 2nd Ed"
"The Elecraft KX3 - Going for the Summit"
www.ke7x.com
www.lulu.com (July 20% discount is JULYBOOKS13)
fcady at ieee dot org

> -----Original Message-----
> From: [email protected] [mailto:elecraft-
> [email protected]] On Behalf Of Pfizenmayer
> Sent: Thursday, July 11, 2013 3:07 PM
> To: [email protected]
> Subject: Re: [Elecraft] K3 / P3 - RS232 ???
>
> New K3 user -- it boots up in transmit if the RS232 attached laptop has
> not
> been booted up first . And no amount of button pushing that I have
> found
> will take it out of transmit. (other than power off - but back on and
> still
> in transmit)
>
> What do I have set wrong ???  This is a real RS232 not a USB-RS232
> dongle.
> All works fine if computer is booted up first - communicates with N1MM
> etc
> etc
>
>
> Hank K7HP
>
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