Brian, Erwin and Win Many thanks for your quick replies - it is now clear that I need a pull-up resistor to 5v. I did read this in the manual but mis-understood that this was only needed with TX inhibit high.
Erwin, I like the web pages of DH8BQA, very nice. Thanks again John -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Lemay Sent: 02 December 2011 19:35 To: elecraft@mailman.qth.net Subject: [Elecraft] K3 TX Inhibit Hello I have a question about the TX INHibit function of the K3. I want to use this with an external sequencer to ensure that my rig, amplifier and masthead preamplifier (on 2m) are controlled in a safe manner, and that even pressing the XMIT button or turning on VOX does not lead to a mishap. However, TX INHibit does not work as I expected:- I have turned on TX INH with LO = INH. I have plugged a lead into the 15 pin accessory socket so that pin 7 can be held low (in my test case, connected to earth). That works fine and TX is inhibited (indicated by the flashing TX icon). When I remove the earth connection from pin 7 the rig remains with TX inhibited - that's the bit I don't understand. I can only get back to normal transmit operation by going back into the CONFIG menu and turning off TX INH. What am I missing ? Regards John G4ZTR __________ Information from ESET NOD32 Antivirus, version of virus signature database 6678 (20111202) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __________ Information from ESET NOD32 Antivirus, version of virus signature database 6678 (20111202) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 6678 (20111202) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
