[Elecraft] K3 Bootup sequence?

[Don Wilhelm]

If you are using DTR and/or RTS for PTT or keying, that will happen as 
the OS tests the serial ports.
If you do not need that keying, turn it off in the K3 menu.
If you do need it, I would suggest putting a DB-9 A/B switch in the 
serial line.  Turn it to break the connection to the K3 during the PC 
bootup cycle.

73,
Don W3FPR

On 6/25/2013 11:16 AM, F5vjc wrote:
> When booting up my PC connected to the K3 it keys the TX several times
> during the bootup sequence, I imagine when initialising the various
> comports. I need to power up the K3 first before PC boot as I have added LP
> Bridge to my PC auto start program list and it wants to see the K3 to
> enable the connect port.
>
> Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the
> TX into TEST mode)?
>
> I believe there must be a way but can't find it as yet.
>
> Thanks, 73 F5VJC
>