Re: [Elecraft] PTT keying a KXPA100 with a K2

Luc and all, I have been informed that simply clicking the link I sent may give a 404 error because somehow a period is picked up as part of the link. Simply remove the period and it will work fine. 73, Don W3FPR On 12/13/2020 12:13 PM, Don Wilhelm wrote: Luc, The short answer is that will

Re: [Elecraft] PTT keying a KXPA100 with a K2

Luc, The short answer is that will not work. What you need is an open circuit on receive and a short to ground during transmit. Take a look at the K2(BASIC) External T-R Relay Driver on Tom Hammond's (SK) website http://www.mmccs.com/mmarc/n0ss/index_k2.html. Kits are now available from Da

[Elecraft] PTT keying a KXPA100 with a K2

Hi, I own a QRP-K2 with the KIO2 installed. I want to PTT key a KXPA100 (not KPA100). May I connect Pin9 from KIO2 (8V in receive mode and 0V in transmit mode) directly with the PTT-IN connector on the KXPA100 (5V receive, 0 V transmit) ? Maybe with a diode (cathode KIO2, anode KXPA100) ? Thank