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I use my K3 only for 6 meter work, but I have been unhappy with the performace of the noise blanker for pulse spikes.
no matter how I adjust the DSP or the IF blanker I cant seem to bank out the pulses.
I can take out the power line type buzz but not the sharp spikes
When playing with the IF adjustments and I increase it to NAR-7 with the DSP OFF my S meter goes from S3 to S6 and the backkground noise increases and sounds almost like intermod.
When I turned my antenna all of a sudden the noise level dropped to S3 my normal background level.
I tuned down band a found 3 very strong signals,S9+40 (baby monitors) 49.830 49.870 & 49.890
It seems the IF blanker samples signals before the filters and therefore look at a very large sprectrum.
and it appears that those strong down band signals overload the blanker...
I turned my antenna and peaked the monitor signals, then tuned up band, when I got to 50.450 the overload went away. which is 600KC above the interfering signals.
The bad part is if I turn my antenna to where I don't have the overload my antenna will be stuck on JA land... not much good this time of the cycle when you live in Seattle
It would be nice to be able to keep it pointed at Florida but that right where the interferences is the worse.
don't know of the DSP code can be modified to incorperate pulse type spikes or not..
Ed K7WIA
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