[Elecraft] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

[Dave Cole]

Wayne,

Second report using Horticultural lights as noise source.

Each evening 40 lights up with grow lights, and the results with them
are much different than the previous results, the grow lights are cut
back to the point I can hear additional stations, but only if I use
headphones...

Did the test much as before, and it does seem that the CW sigs are a
bit better than in previous tests, but it is a close call for me, and I
am not sure how much of this is imagination...  A good chunk of my
noise is not shot type RFI, but broad spectrum hash, with well rounded
peaks, not spikes.  This method seems to remove spiky RFI better than
wide RFI...  More as I test...

My RFI level is low tonight, every so often I get a real hummer of an
RFI signal...  I will test on that...

-- 
73's, and thanks,
Dave

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On Fri, 2016-02-05 at 09:57 -0800, Dave Cole wrote:
> Hi Wayne,
> 
> On list report as you asked for...
> 
> Set up as described, only using a 13KHz filter in F1 position...  
> 
> Using a florescent light, which makes a rather ugly wide band noise,
> only on 18 MHz., I performed a sort of blind test....  
> 
> After doing the full setup as you described on a very weak CW
> station,
> I hit the NB button as fast as I could for several seconds while
> looking away from the radio...  This confused me as to if it was on
> or
> off...
> 
> I then while still looking away from the radio brought the NB on and
> off line, and stopped on teh CW that was easiest to copy.  
> 
> I did this five times, and after each test, I re-scrambled my memory
> by
> again, hitting the NB switch many times, and looking away from the
> radio.  
> 
> Five out of five times the NB was off when I stopped, indicating that
> the NB made the CW harder to copy.  
> 
> Sorry...  I will try later tonight, when all the Horticultural lights
> come on line on 40 meters, which has tons of RFI from them.  I will
> report again...
> 
>