Hello Carl
All very interesting! I still see a huge increase in distances as
nightfall moves in, but all of the extremely distant stations are picked
up at the upper end of the NDB allocation close to 400 kHz. During the
day a good haul is Schenectady, NY to the west. For 25 watts that is
*Extremely* interesting!! :-)
On Sat, Feb 8, 2020, 2:52 PM Mike Smith VE9AA wrote:
> Sorry, I don't know the answer(s) to your questions but did want to say,
> thanks for writing this. I find it very interesting reading.
>
73, Mike
W0BTU
>
_
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First thing, 160 meter is NOT the Topband and hasn't been for a number
of years. 2200m is the Topband, with 630m in second place, and 160m a
distant third.
There are two areas of interest in the MF/LF/VLF world. Amateur and
non-amateur/SWL.
If you are primarily interested in just
Hi Dave,
Sorry, I don't know the answer(s) to your questions but did want to say,
thanks for writing this. I find it very interesting reading.
I know VY2ZM conducted some experiments around noon on 160m (and lower???)
some years back. Wish I could find it again, but he was able to make it
://www.ndblist.info/
https://www.classaxe.com/dx/ndb/rna/
- Original Message -
From: "David Olean"
To: "topband"
Sent: Saturday, February 8, 2020 2:50:53 PM
Subject: Topband: Inquiring minds want to know
Hello Topband propagation experts,
I have been messing around w
> What the heck happened that I could hear a
> long wave signal over 2000 miles away at mid day?
For a given electron density profile, the amount of refraction incurred by
an electromagnetic wave is inversely proportional to the square of the
frequency.
The result of that is the lower the
In some ways it is much better. Remember *200 Meters and Down*?
I have two ELF receivers that feed the worldwide blitzortung.org network
and lightningmaps.org. It continues to amaze me how far that wideband QRN
propagates, even during daylight hours.
Most of those strokes' energy peaks around 20
Hello Topband propagation experts,
I have been messing around with listening to low frequency navigation
beacons and wondering how reception on 200 kHz relates to 160 meters.
Not sure there is a correlation. I have been listening on my 1942
Bendix aircraft radio, an MN-26C, which covers 150
