[Elecraft] KX3 / NaP3 Display Images

Don Wilhelm w3fpr at embarqmail.com
Wed Mar 5 17:04:38 EST 2014


Jim,

NaP3 has a mirror image rejection algorithm.  Tune to an S-9 or greater 
signal and wait a bit to allow it to work  The stronger the signal, the 
faster it will be corrected.  An XG3 set to -33 dBm will work quite nicely.

73,
Don W3FPR

On 3/5/2014 4:35 PM, Jim Bennett wrote:
> Over the course of the past several weeks I've been messing around getting my KX3 to work with the free panadapter display program NaP3. I enjoy using the P3 with my K3 and wanted something similar for the KX3. NaP3 seems to fit that wish pretty well, and it's free!
>
> However, there is one issue that I am not able to resolve, and I'm not the only one seeing it. At least two other KX3 owners that I know about have experienced this issue and I'm wondering if there is a fix, or is it just the way it is. Also, what causes it - KX3 design or something out of whack in NaP3? Here's what the issue is:
>
> When I look at the Panadapter view of a band segment, there are almost always TWO places where a signal is seen. One is usually a tad stronger (peaking higher) than the other. As I turn the dial on the KX3, they move in opposite directions. Only ONE is the "real" signal - the other is a mirror. It isn't a huge problem, but does cause me to tune to dead space if I've selected the wrong one. :-(
>
> Is there a way to eliminate this mirror image situation?
>
>



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