[Elecraft] KX3 ACC2 GPIO

[Chris Cox, N0UK]

Thanks all - hopefully it now knows what a transverter is.

Chris Cox, N0UK
chrisc at chris.org



> On Aug 31, 2020, at 1:31 PM, Raymond Sills <raysills3 at verizon.net> wrote:
> 
> HI Chris:
> 
> You have to "teach" the dictionary to understand that transverter is a real word.  For whatever reason, I must have done that at some time, since I can have transporter and transverter in the same sentence with this iMac.
> 
> But we knew what you meant, even if the Mac didn't.  :)
> 
> 73 de Ray    
> 
> 
> 
> 
> -----Original Message-----
> From: Chris Cox, N0UK <chrisc at chris.org>
> To: Elecraft-KX at groups.io; elecraft at mailman.qth.net
> Sent: Mon, Aug 31, 2020 1:53 pm
> Subject: Re: [Elecraft] KX3 ACC2 GPIO
> 
> And why does my Mac ALWAYS rewrite TRANSVERTER as TRANSPORTER?!
> 
> Chris Cox, N0UK
> chrisc at chris.org
> 
> 
> 
> > On Aug 31, 2020, at 12:50 PM, Chris Cox, N0UK <chrisc at chris.org> wrote:
> > 
> > I wish to interface my KX3 to my portable 10GHz transporter system.  I have the transporter’s PTT sequencer configured to output a +ve TX Inhibit signal which I have been using to prevent my current I/F rig from transmitting until all relays have changed over to transmit.  The current rig is a Yaesu FT-817. 
> > 
> > I want to be able to simply switchover the PTT/TXInh cable between the two rigs, so that I can continue using the ‘817 as a backup in the event of some problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO TX Inh +ve input just as I do the 817.
> > 
> > However, it seems that the KX3 actually has some bias applied that requires to be pulled low to enable the transmitter, rather than looking for removal of the +ve signal.  This will mean that I need more than to simple switch over the physical connectors on the umbilical cable.  Although not insurmountable, it’s not exactly ideal.
> > 
> > Anyone else done this or similar and, if so, what was your solution?
> > 
> > 73 Chris
> > 
> > 
> > Chris Cox, N0UK
> > chrisc at chris.org
> > 
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