Any noise blanker will only reduce RFI from a SINGLE source at a time.
73 Mike
W0BTU
On Wed, Dec 3, 2025, 9:17 PM <john@kk9a.com> wrote:
> It may not work for you however the NR-1 appears to be great for power line
> noise. KP4AA made the following video:
> https://www.youtube.com/watch?v=i3tDPcf-ZjE
>
>
> Roger Kennedy G3YRO
>
> Having read the Handbook for this device, it looks like it is just for
> pulse-noise (like ignition, or electric fences etc) . . . but removing it
> BEFORE it gets into the Receiver, unlike the usual Noise Blanker circuits
> that are in the I.F.
>
> My local noise on all the low bands is just wideband hash from various
> neighbours dirty switch-mode PSUs. The Noise Blankers in my rigs don't
> reduce it at all . . . so I'm presuming that neither would this unit?
>
> As per the previous post, I wonder if anyone has used it?
>
> Details here:
> http://www.qrp.gr/nr1/sv3ora_NR-1_Antenna_Noise_Blanker_manual_EN.pdf
>
>
> Roger G3YRO
>
>
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