I performed the mod tonight.  Less than a couple of minutes.  No noise. I am
on a very early board and found it to be absolutely quiet with no antenna.
Way to go Wayne and CO!!!

 

73,

Bill

K9YEQ

K2 FT, KX1 FT, KX3 FT, KAT500 FT

 

From: k...@yahoogroups.com [mailto:k...@yahoogroups.com] On Behalf Of Wayne
Burdick
Sent: Tuesday, July 09, 2013 5:22 PM
To: Elecraft Reflector; k...@yahoogroups.com; <elecr...@yahoogroups.com>
Subject: [KX3] Regarding the KX3 VFO tuning noise modification

 

  

A number of customers have now made this modification to their KX3 (thanks
for the feedback). Most have found that the mod successfully eliminated the
noise or knocked it down to insignificant levels on all bands.

A few have found that it helped only on some bands, or not as much as
expected. This could be because the noise was already near the lowest level
obtainable with the modification. In any event, the firmware noise-reduction
methods mentioned in the document may still be required on some bands, on
some KX3s.

In answer to a couple of questions we've received: The modification done at
the factory, and the easier field-modification described in the document,
are absolutely identical in effect. We tested both methods on numerous KX3s.

In addition to the hardware modification, we're continuing to experiment
with improvements to the VFO NR algorithm available in the menu. Any such
improvements will be available via a future firmware update.

73,
Wayne
N6KR

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