[Elecraft] KPA1500 with K4 tracks VFOs with 1 kHz resolution

[rocketnj at gmail.com]

I have seen this behavior using a non-Elecraft exciter (Kenwood) and KPA1500
amp on digital modes. In my case it was right after connecting the new radio
and TX audio levels were too high, causing splattering. The freq counter in
the amp wasn't happy. Lowered audio level to where there is no ALC
deflection on the exciter and problem never happened again. 

Just a thought but check your ALC when on WinLink. You should not see any
ALC indication. 

Dave wo2x

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
Behalf Of Lyn Norstad
Sent: Tuesday, July 21, 2020 5:40 PM
To: 'Wayne Burdick' <n6kr at elecraft.com>; 'Andy Durbin' <a.durbin at msn.com>
Cc: 'Elecraft Reflector' <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] KPA1500 with K4 tracks VFOs with 1 kHz resolution

Interesting ... I am seeing issues with my KAT500 not holding a setting, but
jumping to (and displaying) a frequency 200 - 300 KHz lower unpredictably
during a Winlink Vara session.  It always comes back to the correct
frequency when the rig is transmitting, but has to go thru a short
relay-clatter routine to get there.

This is on 80, 40 and 30 meters (all I have tested so far).

For example, if the dial frequency is at 7101 the tuner can't seem to decide
whether to sit on 7104 or 7096.  That doesn't seem to cause a problem as
much as when it suddenly drops to 6874, 6864 or 6856.  I am seeing similar
behavior on 80m and 30m.

I recently did a total reset and reloaded the firmware (v01.75).

Any thoughts?  Bin width?

Thx.
73
Lyn, W0LEN
Message delivered to rocketnj at gmail.com