[Elecraft] K3 Hardware Updates

[James Sarte]

Well, got around to installing the resistor/diode kit today, and for the
most part was uneventful. I managed to slightly melt/warp the edge of the
plastic RJ-45 jack at the bottom of the board near C66, not realizing my
iron was resting on it or very close to it.  That bummed me out to say the
least!  Thank goodness that jack is at the bottom of the K3 and doesn't
really do anything.

Anyway, all seems to work well.  The VFO noise I heard on 5 MHz is now gone
once SPI2 is engaged in firmware.  What is odd though is that there now
seems to be VFO noise around 52 MHz where it was never noticed before.

73 de James K2QI

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Eric Swartz -WA6HHQ,
Elecraft
Sent: Sunday, August 23, 2009 5:31 PM
To: David Pratt
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates

This was mis-worded in the doc and is being corrected. It should read:

"IMPORTANT:  You must complete the modification as described below before
enabling the vfo noise reduction menu item in version 3.24 or later. Failure
to do so may result in erratic behavior of your K3."

Basically, he resistor/diode mod is only necessary if you -enable- the
option in the menu (which only appears in V3.24 and later). 

Its perfectly OK to run 3.24 (or later) and not make that h/w mod (as long
as it is not enabled in the menu.)

There is no downside to making this h/w mod, even if you do not enable 
the menu option.

73, Eric   WA6HHQ