Although it's preferable to have at least 20W to tune, the good book
says that anything between 7 and 100 watts is OK. I guess you're
providing that in CW mode. Have you 'trained' the KAT500 for the entire
band/s you want to use? If you do that in Auto mode, then switch to
Manual mode, the KAT500 should see RF from the IC-7300 and switch to the
'trained' and matched frequency, but you will have to speak into the mic
to produce some RF. Pressing the PTT or Transmit button won't do that,
unless you have a really high background noise which the mic picks up.
Are you sure that the IC-7300 internal tuner is switched out? I haven't
messed with our club's IC-7300 for some time (pandemic issues) but I
previously found that the internal tuner was not very good and would not
match anything over 2:1 and even with it switched out the rig would
drastically cut its power back if it thought the SWR was high. It may be
a chicken and egg situation where the KAT500 has not yet matched, so the
IC-7300 sees that mismatch and won't produce enough power to make the
KAT500 activate.
You would probably find it would work as you wish if you setup an AH-4
cable between the rig and tuner. Page 15 of the KAT500 shows how to do
this.
73,
Alan. G4GNX
------ Original Message ------
From: "Russell Domareck via Elecraft" <elecraft@mailman.qth.net>
To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Sent: 12/09/2020 22:04:29
Subject: [Elecraft] K1ZTE - KAT500
I own a KAT500 and KPA500 that I use with an IC 7300. When in CW mode, the
KAT500 can be activated by keying the IC 7300, no problem. This allows the
KAT500 to find a match with low power while the KPA500 is in standby mode. In
SSB mode, there is still the need to activate the KAT500 for the match,
however, neither keying the mike nor speaking into the mike activates the
KAT500. A press of the transmit button in the IC 7300 also did not activate
the KAT500. I find that I have to first switch to CW mode for the activation
before switching to SSB so that the KAT500 is all set for KPA500 operation. Is
what I am doing the only way to do this? I have read related posts on this
subject but they did not satisfactorily answer my question.
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