Yes to all. There's no question that something has changed within the
K3. 15 was always marginal, with higher current at 100W than the other
bands, but now the maximum current on 15 is lower than it used to be,
which makes me suspect the LPA module. When I recently did a new TxGain
calibration, 15 did not change much, (HP 12 to 19), but 24 MHz did (HP
08 to 46). LP calibrations changed by similar amounts. However, output
on 24 MHz is normal, as is the current. The calibration did not change
output or current on 15.
73,
Scott K9MA
On 11/13/2016 22:37, W0MU Mike Fatchett wrote:
Did you do a re-calibration? Is this output confirmed on a external
meter? Do the K3 and external meters agree is what I am asking.
Is there some way you are getting rf back into the rig just in 15m?
Does it do this on a dummy load?
Have you taken the K3 completely out of line, no computer, no amp, no
tuners etc?
On 11/12/2016 7:01 PM, Gary Gregory wrote:
Issue not seen on mine. Had it since January 2007 so maybe you have an
issue?
Gary
On Nov 13, 2016 11:59, "WILLIE BABER" <wlba...@bellsouth.net> wrote:
My 2014 purchased K3 is 20-25 watts low on 14mhz but all other bands
are
good. ....just haven't worried about it as I normally use 50 watts
or less
to drive an amplifier. I'll look into it after ARRL DX CW in
February, so
long as it doesn't get worse.
73, Will, wj9b
CWops #1085
CWA Advisor levels II and III
http://cwops.org/
--------------------------------------------
On Sat, 11/12/16, K9MA <k...@sdellington.us> wrote:
Subject: [Elecraft] K3 Low Output on 15
To: elecraft@mailman.qth.net
Date: Saturday, November 12, 2016, 3:37 PM
The output of my K3 (SN 4657) has
suddenly dropped 10-15 W on 15 meters,
from about 100 W to 85-90. The other bands haven't
changed, nor has the
supply voltage (13.6 V at full power). Restoring to a
previous
configuration does not help. I had a similar problem
early on, also on
15, and had to ship the K3 back to Elecraft, who replaced
the 10 W
module, but not the KPA3. 15 seems to be a problematic
band. Has
anyone else seen a problem like this?
73,
Scott K9MA
--
Scott K9MA
k...@sdellington.us
______________________________________________________________
--
Scott K9MA
k...@sdellington.us
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