Hi Ed, The KX3 specification rates the key line at: "Accessory I/O (ACC2 Jack) KEYLINE: 30 V, 100 mA max, open drain;" on page 54.
The amplifier should also have a specification. As long as the amp is under 30V and 100 ma, all will be OK with a direct connection. If the amp does not have a specification, amp key input measurements can be performed with a voltmeter and an amp-meter. John KN5L On 03/12/2018 10:30 AM, Eddy Avila wrote: > Greetings, can anyone suggest how to connect a KX3 to a non-Elecraft amp > keying circuit? I'm thinking I should use a small reed relay to do the > keying. The amp uses the typical grounding a pin on the amp to key up > amplifier. ______________________________________________________________ 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