[R-390] MF/LF Reception
Don Reaves
donreaves at gmail.com
Tue Sep 19 16:41:08 EDT 2017
Alan, no truer words were spoken. Noise from all the digital devices we
swim around in, along with power line noise, is now almost insurmountable.
Years ago, I was able to easily copy WWVB with an R-389 with a homebuilt
magnetic loop, mounted with a rotator so I could null out noise.
Originally at this location I benefited from living away from close
neighbors, who were mostly RFI quiet but over the last few years I have
noticed the ever increasing noise floor as everyone adopts home wifi, smart
phones, part 15 devices, internet enabled refrigerators, TVs and home
automation gadgets. I'm guilty of that, too, but at least I can track down
my own RFI culprits. I banned CFI lamps for that reason.
At least those wanting some help should look at loop antennas (aka
skyhooks) for HF reception. And eProbe active antennas located 50 or more
feet away from your computers, the higher the better.
BTW, WWVB must be a "large signal". I wear a VLF receiver on my wrist that
keeps clock time reasonably accurate. Its a Casio Wave Ceptor
<https://www.casio.com/products/watches/wave-ceptor/wvm60-9a>, and I do
nothing special for it to grab time signals from Colorado nightly.
Don
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