[Elecraft] K3 NB Operation

[KB9WMJ at wi.rr.com]

K3's can have problems with poor connections on the front panel, as early 
ones did not use gold pins.  I'm not sure where the engineering change is, 
but current production K#'s use gold pins now.  As the rig ages, you can get 
a poor connection, and loose functions, like the NB icon dissapearing.  This 
is not an easy mod, as there are like 40 pins that would need to be 
replaced.

Elecraft e-mailed me back since my 1st post, and said they did NOT do the 
gold pin mod when they had the rig last year.  This is different than what 
they told me on the phone when I called them.


----- Original Message ----- 
From: "Andy, KU7T" <ku7t at ku7t.org>
To: <KB9WMJ at wi.rr.com>
Sent: Tuesday, October 08, 2013 6:23 PM
Subject: RE: [Elecraft] K3 NB Operation


Keith,

What is the gold pin mod?

Thanks
Andreas

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of KB9WMJ at wi.rr.com
Sent: Tuesday, October 8, 2013 3:17 PM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] K3 NB Operation

I am trying to understand the Noise Blanker in the K3.  I don't use it very
much, but I was playing with it today, and got mixed results.

On 10M USB, when I tap the NB button I hear the enable tone (mid tone going
high) that it turns on, but the NB icon is not displayed.  If I use the
autotuner in the rig, the NB icon appears. I have NB Save on in the config
menu, and if I switch from 10M to 12M, and back, the NB icon is gone, but
the NB is engaged, and if I press the NB button I get the disengage tone
(mid tone going low).  I do not understand why the icon does not always
show.

When I press the NB button, for the Level setting, I can set the DSP
settings (Off and T1-1 to T3-7) with the main VFO, but the bottom of the
display says "IF N/A" and I can not adjust it.

I know the NB is working, as I can adjust it high enough to cause
distortion, so I can hear the difference when I switch in on and off.

S/N 3897, and gold pin mod was done by Elecraft.

Keith
KB9WMJ

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