Hi Jamie,
Neither... KEY OUT is connected to an IRF630 power MOSFET which has "on/off" states, not "HI/LO" states. During receive its in the off state, sinking less than 50 microamps from the load connected to KEY OUT. During transmit its capable of sinking ("grounding") up to 200 volts at up to 5 amps continuous from the load connected to KEY OUT. 73 Frank W3LPL ----- Original Message ----- From: "Jamie WW3S" <w...@zoominternet.net> To: elecraft@mailman.qth.net Sent: Friday, January 4, 2019 8:45:22 PM Subject: [Elecraft] K3 KEY OUT, hi or low on TX? Does the KEY OUT jack go HI or LO during transmit? ______________________________________________________________ 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 Message delivered to donov...@starpower.net ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com