Andy, my friend, you are forgetting something. The secondary toroid of the directional coupler has a direct path to ground. That means there is no straight-through DC path.
Rare that I catch Andy on something… 73, Jack, W6FB > On Jul 11, 2021, at 6:12 PM, Andy Durbin <a.dur...@msn.com> wrote: > > KAT500 antenna selection drops to ANT-1 when there is no power on KAT500. > Also, with no power on KAT500, the Bypass relay defaults to bypass state. > There should be a simple DC path between input RF connector and ANT-1 RF > connector if the KAT500 is not powered. > > Pull the DC input plug and the coax connectors and measure DC resistance > between XMTR and ANT-1. No fancy PIN diode switching in KAT500, it's all > relays. > > 73, > Andy, k3wyc > ______________________________________________________________ > 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 jackbrin...@me.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 Message delivered to arch...@mail-archive.com
