http://elecraft.85.s1.nabble.com/KX3-CW-from-computer-tp7365321p7367198.html
use the PTT line. If you set the break-in delay (DLY) to 0, (zero), you
I have no idea how the 100w amp will work. IMHO it should be able to do
>I do not believe there is a need for 2 com ports.
> Most logging applications only handle 1 port. They use TXD and RXD for
> rig control and do keying and PTT with RTS and/or DTR in the same port.
> All you need in addition to the KX3SER cable is to make two of the "one
> transistor keying circuit" to convert the RS-232 levels to TTL - connect
> one circuit to the RTS pin, the other to DTR (in the same KX3SER
> cable). on the KX3 side of the 2 circuits, one connects to the hand key
> input and the other connects to PTT.
>
> Actually, you will probably want to make your own KX3SER cable because
> the production cables will have a molded backshell according to a post
> by Eric last week - but making your own should not be difficult at all,
> a male DE-9 connector, a backshell, a 3.5mm stereo plug and some wire -
> add 2 transistors for the one transistor keying circuits and you are done.
>
> 73,
> Don W3FPR
>
> On 3/12/2012 12:51 PM, Tony Estep wrote:
>> On Mon, Mar 12, 2012 at 11:18 AM, KU7Y<
[hidden email]> wrote:
>>> ...I changed over to using a USB WinKeyer...
>> ========
>> I can set up my software to use 2 Com ports, one for
>> rig control and one for keying, and have a second gadget attached to
>> the computer to key the radio.
> ______________________________________________________________
> Elecraft mailing list
> Home:
http://mailman.qth.net/mailman/listinfo/elecraft> Help:
http://mailman.qth.net/mmfaq.htm> Post: mailto:
[hidden email]
>
> This list hosted by:
http://www.qsl.net> Please help support this email list:
http://www.qsl.net/donate.html