A relay click is provided as audible confirmation of the MODE button press. We also don't want any Mode changes while the amplifier is providing QRO power.
The amplifier key interrupt relay is set to "amp not keyed" by any mode change, a short delay, check for too much power, then the ATU settings are changed if needed (and in your case probably wasn't changed) and then the amplifier key interrupt relay is released. You hear this pull and release as a click. The amplifier key interrupt relay is switched to inhibit the amplifier's key line before any RF path ATU relay changes to avoid hot switching relays at high power. 73 de Dick, K6KR -----Original Message----- From: [email protected] <[email protected]> On Behalf Of ANDY DURBIN Sent: Monday, July 23, 2018 08:43 To: [email protected] Subject: [Elecraft] KAT500 Bypassed or Bypass? My default KAT500 configuration for 6 meters is Mode - Manual, Antenna -1, Others - Bypassed. If I select Mode - Bypass I hear a relay click but Antenna and Others are unchanged. There is no change in SWR. What changes between Mode - Manual, Others - Bypassed and Mode - Bypass, Others - Bypassed? Which relay(s) is/are changing? 73, Andy k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
