[Elecraft] K3 NB Info

[Keith Onishi]

Noise Blanking section in the K3 Owners Manual says;

Rotating VFO A clockwise will turn on the DSP NB, showing DSP t1-1 through DSP t3-7. The first number shows the relative pulse integration time, and the second shows the blanking level. The
higher the numbers, the more aggressive the DSP blanking action.
Rotating VFO B clockwise will turn on the IF NB, showing IF NARn, IF MEDn, or IF WIDn, where n is 1-7. NAR/MED/WID refers to narrow/ medium/wide blanking pulse widths, and n is the blanking level. Higher n means more aggressive blanking action. Use NAR width when possible to minimize strong-signal interaction effects.

73 de JH3SIF, Keith

> 2021/10/20 5:44、Ed Cole <kl7uw at acsalaska.net>のメール:
> 
> I'm trying to use the DSP NB on local noise to improve my 6m reception of very weak signals (i.e. eme signals).
> 
> There are three ranges of DSP NB T-1, T-2, and T-3 with level settings of 1 to 7.  The levels are self explanatory, but have found no description about the three ranges (application, function, etc)
> 
> I've inquired of fellow K3 owners that do eme and they say it improves SNR with no deterioration of digital signals (specifically JT65 or Q65).  FT8 is probably a good test and more widely used.
> 
> Opinions and recommendations.
> 
> My 6m local noise peaks to S7 in the NE and drops to S2 when antenna is rotated to SE thru West.  Elevating 13-degrees also helps, dropping S7 to S4.
> 
> Tnx & 73, Ed - KL7UW
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