[Elecraft] K3 RX issue with KAT3A?

[Mark E. Musick]

Jerry and Udo,
You can't save the configuration file from one K3 and then load it into
another K3. The configuration file contains the serial number and
calibration information specific to the K3 you're saving the configuration
file for.
I think you can print out the configuration files for each K3 and compare
them. Then change only the parameters that are not K3 specific.
There was an earlier thread that addressed a possible way to remove the
specific K3 information from the configuration file and only load the non K3
specific parameters.
I don't remember the details or even if it was determined that it was
possible. You will have to search the archives.
Hope you find the solution.

73,

Mark, WB9CIF
K3-3505 and K3-7436


-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
ae4pb at carolinaheli.com
Sent: Monday, November 2, 2015 5:09 PM
To: 'Udo Langenohl - DK5YA' <dk5ya at dk5ya.de>; elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 RX issue with KAT3A?

Use the K3 utility to save the config from the "Good" K3, then use the same
utility to save the config from the "suspect" K3. Finally use the K3 Utility
to restore the config from the "good" K3 into the "suspect" K3 and retest. 

If that doesn't fix the issue then I'd start double checking the connections
per the assembly manual.


Jerry Moore
CDXA, INDEXA, SKCC, Fists
AE4PB, K3S - S.N. 010324
http://www.qrz.com/db/AE4PB
An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
Patriotic.


-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Udo
Langenohl - DK5YA
Sent: Monday, November 02, 2015 10:19 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 RX issue with KAT3A?

Gents,

in spring I made an upgrade to my K3 (#59xx) with the internal ATU KAT3A.
After this I guessed that there is a noise drop on all bands from
160 up to 10, but was not 100% sure. The strange thing: neighbor stations
with similar setup always gave much better reports than me, at least 10 dB
better. I was struggling a lot with my antennas, checked coax every now and
than etc. but everything was o.k. At that time my main RX became suspicious.

Last week I bought a K3/10W (#39++) from a local ham as a backup here in my
shack. Comparing both rigs shows a huge difference in sensitivity. 
Very weak signals, almost in the noise on 10 Meters are clearly audible in
the freshly bought K3 while there's almost nil on my old one. So i fired up
my HP8664A signal generator today and found my old K3 to be at least 9dB
worst compared to new one. This is for the main RX in my old
K3 while the second RX iny my old K3 is almost similar to the new K3 when
fed through the AUX input (not through ANT 1!!).

So whats going on here? Something broken in my old K3 when I made the
upgrade with KAT3A? Wrong wired? I have no idea, perhaps you got one?

Udo, DK5YA
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