Mike,
You must do the extended temp calibration before
doing any digital modes; that's a given. KX3 is
fine for CW and SSB without it -- and it takes 2-3
hours to do (not complex, but you have to cool
then heat the rig), so if they did it at Elecraft
they'd have to add that to the cost of the rig.
Heat sinks: There are several out there. That one
at eBay looks a bit "thin", and no telling about
the quality of machining, etc. But the price is
attractive. My choice early on (when there were
only one or two options) was this one
http://www.ve7fmn.ca/ Cooler KX. There are some
reviews of it here
http://www.eham.net/reviews/detail/11702
Definitely more expensive but you really know what
you're getting -- good, deep cooling fins and
plenty of mass with a heat sink that is
well-machined and mounted.
73, Phil W7OX
On 12/26/14 7:16 AM, Mike Sanders wrote:
Thanks to those who responded. I will try the calibration mentioned by Dave
below first. It may do the job. 73 Mike
GOD BLESS AMERICA
KØAZ Mike Sanders EM37cd
www.k0az.com
SouthWest
Missouri
Don't overlook doing the extended temperature calibration procedure
http://www.elecraft.com/manual/KX3%20Custom%20VFO%20TC%20rev%20A9.pdf
I've done it on a small number of KX3's and the improvement in thermal
stability is considerable. If you haven't run it before, it's time
consuming so be patient and be prepared to re-run it as it's easy to make a
small mistake. I also had issues with getting it to work on one of the
KX3's (mine, naturally) after running straight through on the others. It
couldn't all have been finger trouble, but after multiple, patient re-runs,
it went through and my KX3 is now remarkably stable over a wide temperature
range. It was well worth the effort.
Season's Greetings, one and all. 73 Dave G3TJP
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