Dick, you wrote: I will eventually move the isolation balun between the
KAT100 and the K2/100.
It doesn't seem to be a good idea. You may get potential difference between
the two. Here is much about it: http://www.w8ji.com/rfi_rf_grounding.htm
http://www.w8ji.com/rfi_rf_grounding.htm
regards
Dick,
It is very strange that the K2 would have a problem like that on only
one band. Does your KPA100 have a shield over the speaker magnet?
About the only thing that I can think of is that the speaker shield is
missing and its magnetic field is interfering with the operation of the
VFO
I have encountered difficulty with the KAT100. I am pretty sure the problem
resulted from RF feedback in the shack from a Zero-Five flagpole antenna with
an unun at its base, an ugly balun with Polyphaser ground after 80 feet of coax
prior to entry into the shack, and a Balun Designs isolation
Dick,
Are you doing the component tests (C5 to C6 for example) into a dummy
load or into your antenna.
Trying that test into an antenna just adds a lot of other unknowns into
the formula - use a dummy load.
Not only that, check the dummy load and the coax going to it - if you
have an antenna
, 2013 7:45 pm
Subject: Re: [Elecraft] KAT100 Problem
Dick,
Are you doing the component tests (C5 to C6 for example) into a dummy
load or into your antenna.
Trying that test into an antenna just adds a lot of other unknowns into
the formula - use a dummy load.
Not only that, check the dummy load
...@w3fpr.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT100 Problem
Don,
Thanks for your prompt response. Yes, I reduced everything to its bare
minimum and tested it on a dry dummy load. I am sorry; I should have stated
that. I also used about different jumper cables to connect
Dick,
I figure you are using a multiband antenna. It may be presenting a very
low or very high impedance to the KAT100 on 20 meters. The solution is
to add or subtract about 1/8 wavelength of feedline to the antenna
system. On 20 meters, that would be about 8 feet of feedline.
Of course,
To: richardjwiltgen richardjwilt...@aol.com
Cc: elecraft elecraft@mailman.qth.net
Sent: Sun, Jul 7, 2013 10:38 pm
Subject: Re: [Elecraft] KAT100 Problem
Dick,
I figure you are using a multiband antenna. It may be presenting a very
ow or very high impedance to the KAT100 on 20 meters. The solution is
o
While trying to make a few contacts in the PA QSO party, I hit the Tune button
to adjust the match to my antenna. All of the LEDs on the KAT100 light up and
the relays cycle for about 5 seconds or so. Then will all of the LEDs still lit
and the display showing 9.9:1, the radio switches back to
Larry,
I would suggest that lightning, wind or rain static has damaged the
wattmeter diodes in the KAT100 so it can no longer properly measure
either power or SWR. Those are the 1N5711 diodes at D1 and D2.
You might also check diodes D16 and D17 in the KPA100 while you are at
it - it is rare
John-
I worked SS contest last night (SSB) and had a similar problem
running at 100+ watts with my K2-100 and the KAT tuner. I had a
difficult time getting a match when in high power (anything above 11+
watts). When I transmitted, the KAT-100 would switch to Ant #1 for a
second before
That certainly sounds like a problem induced by RF Feedback from the
multiband antenna.
Just as thought, perhaps a bit longer length of coax to your 4:1 balun
might be in order.
L B Cebik suggests a scheme for using open-wire feed - run coax through the
wall to the outside and install a 1:1
: Wednesday, October 25, 2006 12:03 AM
To: Elecraft email
Subject: [Elecraft] KAT100 problem, the sequel
I hard reset my K2 while trying to figure out why the KAT wasn't
working properly. I now know (thanks to Dave) that somehow the ATU
switched from auto setting.
Now, I have to reset
I hard reset my K2 while trying to figure out why the KAT wasn't
working properly. I now know (thanks to Dave) that somehow the ATU
switched from auto setting.
Now, I have to reset / recalibrate. I re checked the 4MHz Osc
calibration, the PLL Reference Oscillator Range, the VCO test,
About a week ago I was transmitting SSB on 20M when the K2 shut
itself down unexpectedly.
I turned it back on and found no error message and all seemed well.
I now realize that I hear no relay clicks on the KAT100 when changing
bands. On 20M I now get a 2:1 SWR, whereas before, I think
-
[EMAIL PROTECTED] On Behalf Of John Wiener
Sent: Sunday, October 22, 2006 11:04 AM
To: Elecraft email
Subject: [Elecraft] KAT100 problem
About a week ago I was transmitting SSB on 20M when the K2 shut
itself down unexpectedly.
I turned it back on and found no error message and all seemed
I just completed the KAT100. Everything checked out going through the checks
and calibration. Problem is when I tune, 1.0-1 displays on the K2 but no
relay action occurs on the tuner and no SWR LED's come on. When I transmit,
a high reflection message displays on the K2. Tuner is set to auto.
Hello all,
I have a problem with my KAT100.
I just built the kit and with the first tests not a single relay is
clicking.
The ledbar is working fine.
I measured at pin 12 of U2, it had a short circuit to GND, only if U1
installed.
Is it right to assume U1 is the problem?
Tnx and
I have been using the KAT100 for about 7 months and it was flawless.
A few days ago I was operating and the electronic air cleaner on my furnace
sparked and must have caused a spike. That spark tripped out the power
supply to the K2. I have a separate supply for the KAT100. After resetting
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