[Elecraft] Jumping K2

[Ron D'Eau Claire]

I've not seen that symptom, but I'd be very suspicious of the resettable
fuse (F1) opening for some reason. Either it's gotten intermittent or you're
drawing enough current to exceed its "trip point" at, I believe, 3 amps. 

The K2 is resetting to a previous frequency because you haven't done
something to make it 'remember' the current settings yet. That'll happen any
time you pull power. The howl... I'm not sure about but what's causing it
might be what's causing the current overload on F1. First I'd check the
current draw as you approach 12 watts. 

Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of gwwhatley at juno.com
Sent: Friday, November 25, 2005 6:21 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] Jumping K2


Hi all
 
My K2 # 4758 has gone strange.  All is well if power is set to less than
about 10 watts.  But lately, if power is set to 12 w or more, it shuts down
and emits a loud and nasty sounding "howl", which only lasts a moment.  It
promptly comes back on, but the frequency changes to a previously used
frequency.  This was not a one time happening, but can be duplicated.  It
seems to be so on all bands.  The only options I have is the KAF-2, (which I
love), and the noise blanker.  Other than this problem, all is fine, and I
am very pleased with my little sweetheart of a rig.  I can understand its
shutting down, but why is it changing frequency and barking at me??  In its
earlier days when it shut down, it did so quietly and returned to the same
frequency.
 
Any ideas??
 
Tnx and 73,
George, N4YM