Hi, our clubs K2/100 has the same problem with high curent at full power on
160m, but my own is ok. Has anyone found a cure?
73 Fraser G4BJM
From: John Reiser <[EMAIL PROTECTED]>
To: J F <[EMAIL PROTECTED]>,Elecraft Discussion List
<elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KPA100/KAT100 on 160 Hi Current
Date: Thu, 07 Dec 2006 10:42:56 -0500
Hi Julius,
Both my K2/100s, #4970 and #5570 exhibit excessive current draw on 160
meters, as indicated by the ammeter on my 30 watt Astron PS. It gets up to
27 or 28 amps. I use a 30 amp fuse. In every other respect, my two
K2/100's work perfectly. Current draw on all the other bands is less than
20 amps.
I don't have an antenna for 160, so I never transmit on that band anyway,
and this is not a big problem for me. Still, being a bit of a
perfectionist, it bothers me that it exists.
I mentioned it on the reflector a while ago. Someone said they had the
same experience, but had no solution. Someone else suggested that I retune
the 80 meter bandpass filter to represent a compromise between 80 and 160.
I tried that, but the excessive current draw continued regardless of the
bandpass tuning. (Could it be due to the KPA100 going into oscillation at
the 160 frequency?)
When I saw your post, I became hopeful that it might evoke a response from
someone who had come up with the definitive solution. But so far there
hasn't been any.
Good luck and 73,
John, W2GW
----- Original Message ----- From: "J F" <[EMAIL PROTECTED]>
To: "Elecraft Discussion List" <elecraft@mailman.qth.net>
Sent: Wednesday, December 06, 2006 5:49 AM
Subject: [Elecraft] KPA100/KAT100 on 160 Hi Current
Well ARRL 160 is history now.
As usual, with the K2 I heard more than I could get to
hear me ;o) Evidently I heard and worked more than
some of the local contesters with "other" brand
equipment heheh.
Anyway I have a problem... I use the KPA100 with the
KAT100, and there may be no connection between the
two, to stretch the bandwith of my antenna. If I set
the K2 for 100 watts (or just twist the knob far
clockwise), the ALC does not kick in. In a key down
situation, the current keeps climbing until the fuse
blows. If I set it for 99 watts (I realize this is not
that precise) the ALC does function somewhat. I've not
tried it with a dummy load. The antenna was fairly
well matched (1.2:1 at it best point)and has a current
balun on it. So this really shouldn't be happening. Do
I have a problem with the KPA?
Thanks,
Julius
n2wn
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