[R-390] MF/LF Reception

[Gordon Hayward]

I use a PA0RDT mini-whip which works really well for WWVB and NAA.

The tiny antenna (30x40mm) cleans the noise up nicely.

Cheers, Gord, VE3EOS

________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Bob kb8tq <kb8tq at n1k.org>
Sent: Tuesday, September 19, 2017 5:05:10 PM
To: Don Reaves
Cc: R-390 List
Subject: Re: [R-390] MF/LF Reception

Hi

WWVB is a particularly tough issue. The world of cheap DC/DC converters
settled on 60KHz as a “ideal” frequency long ago…..You also have sky wave
from MSF that is a big issue in New England.

Somehow I suspect we all now will learn just what is made “cheap and dirty”
at 470 KHz.

Bob

> On Sep 19, 2017, at 4:41 PM, Don Reaves <donreaves at gmail.com> wrote:
>
> 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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