http://elecraft.85.s1.nabble.com/Elecraft-KX3-Owner-s-Manual-now-available-preliminary-tp7343177p7345710.html
jack. You'd have to split the signal out from the RS232 cable.
> Hi Don,
>
> MNI TNX. That is what I was afraid of. I have been requesting the
> WJST option to be
> able to turn the XMTR on and off with TXD and RXD line commands for
> years, but I
> guess it just has not risen high enough on the list :-( This is the
> first time that
> it is actually ME who needs it though - in the past it is all the
> ICOM users who
> would benefit from having that option available.
>
> Looks like I will have to get a second USB cable for the KX3, and
> build some sort of
> interface that will plug into the KX3's custom mic jack to trigger
> the PTT.
>
> VY 73, Lance
>
> On 3/5/2012 5:15 PM, Don Wilhelm wrote:
>> Lance,
>>
>> There are only 2 conductors in the ACC1 jack, so no RTS input -
>> only TXD and RXD.
>> Your application will have to put the KX3 into transmit via the TX
>> command (HRD can
>> do that, I don't know about others), then use RX to get back to
>> receive.
>>
>> You can build the "one transistor keying circuit" that is published
>> in so many of the
>> digital application help files and use that output to drive PTT.
>> Unfortunately, that
>> solution rules out using the KXUSB cable - you would need to use a
>> USB to serial
>> adapter or a real serial port to have the RTS (or DTR) signal
>> available.
>>
>> 73,
>> Don W3FPR
>>
>> On 3/5/2012 11:51 AM, W7GJ, Lance wrote:
>>> Anybody know if the KX3 can be set into XMIT mode via the RTS
>>> serial line from the
>>> computer going into ACC1? I looked in the manual, but I could not
>>> find it. I know
>>> many people with barefoot rigs or modern QSK amplifiers don't care
>>> if they are
>>> running digital modes in VOX mode, but all my amplifiers use
>>> mechanical relays and
>>> when I run WSJT modes (such as FSK441 and JT65), I need to take
>>> advantage of the
>>> built-in delay afforded through that software to turn on
>>> everything to XMIT well
>>> BEFORE the tones are started.
>>>
>>> If there is no way to do this with the ACC1 jack, it appears I
>>> will have to build a
>>> separate transistor switch to interface with my USB to Serial port
>>> converter cable so
>>> I can turn on the PTT somewhere else....possibly via a special Mic
>>> connector or
>>> something. Just more stuff to haul around on DXpeditions....
>>>
>>> Any guidance would be appreciated! MNI TNX and VY 73, Lance
>>>
>>
>
>
> --
> Lance Collister, W7GJ
> (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ)
> P.O. Box 73
> Frenchtown, MT 59834-0073
> USA
> TEL: (406) 626-5728
> QTH: DN27ub
> URL:
http://www.bigskyspaces.com/w7gj> Windows Messenger:
[hidden email]
> Skype: lanceW7GJ
> 2m DXCC #11/6m DXCC #815
>
> Interested in 6m EME? Ask me about subscribing to the Magic Band EME
> email group, or just fill in the request box at the bottom of my web
> page (above)!
> ______________________________________________________________
> 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