[Elecraft] KX3 and KXPA100 slow TX LED

Mike Watterson (K3MAW) mwatterson at gmail.com
Wed Nov 2 12:35:17 EDT 2016


I've experience this issue a couple times before this past weekend, but
during the CQ WW SSB it happened more frequently.

I have noticed at times when I key the mic (Elecraft H3) the TX LED on the
KXPA is slow to light and sometimes takes several seconds.  This does not
happen all the time and it doesn't seem to make a difference whether the I
just hit the ATU button or not.  I found the following in the manual:

Transmit Mode: The TX LED on the amplifier front panel will light
indicating that it is in transmit mode. (If the LED does not light, the
amplifier remains in receive mode and the RF drive simply passes through.
Check the KEY line connections and make sure your transceiver is pulling
the KEY line to ground on transmit.)

So I checked all connections and they are good and secure.

Is this normal behavior that I am just now noticing or does this seem to be
an issue?

Mike - K3MAW


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