[Elecraft] KAT500 Bypassed or Bypass?

[Dick Dievendorff]

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: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
Behalf Of ANDY DURBIN
Sent: Monday, July 23, 2018 08:43
To: elecraft at mailman.qth.net
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
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