Re: LF: RE: Re: Eclipse Experiment

[Markus Vester <markusvester@aol.com>]

Another chance for European VLF observers could be the long-path component from NWC Australia, 19.8 kHz. A transient phase change over America could produce a dent in the ripple pattern which comes from the superposition of long and short path. NWC is now shown in a strip at the bottom of the wideband spectrograms on DL0AO and DF6NM grabbers:

http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm
http://df6nm.de/vlf/vlfgrabber.htm

Best 73,
Markus (DF6NM)


PS I did get Jim's reply but not Peter's posting, so Blacksheep seems rather intermittent here,


-----Ursprüngliche Mitteilung-----
Von: hvanesce <hvanesce@comcast.net>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: So, 20. Aug 2017 4:20
Betreff: LF: RE: Re: Eclipse Experiment

Unofficial EclipseMob update:

Dixon will warm up starting ~ 06:45 Pacific Time, ramping ERP to ~ 1-2 kW at 55.500 kHz and ~ 3-4 kW at 135.950 kHz by 07:30 Pacific Time, broadcasting MSK 101010..., until one or two hours after East Coast totality.
Dixon frequency may wander slightly.
Comparing Dixon signal to WWVB signal could be interesting.

Dixon 55.500 kHz signal field strength could be ~ 40 fT in Forest, VA

A 137 kHz signal from VO1NA, or Warren, or an LF or VLF signal from W4DEX might be captured and saved by a record number of receivers, and put to good use.

73,

Jim AA5BW


-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Peter
Sent: Sunday, July 16, 2017 1:00 PM
To: rsgb_lf_group@blacksheep.org
Subject: LF: Re: Eclipse Experiment

Hi Jim et al.

On 16.07.2017 15:18, Jim wrote:
> ...
> (b) any before/during/after data from stable receivers ...

There is a slight chance to observe effects via the propagation paths from NAU, NAA or NML to Europe. Especially NAU looks promising since the C-flare from 2017-07-15, ~1940 utc, could be observed quite well here.
http://lf-radio.de/cgi-bin/test/plot_channel.cgi?date=17-07-15&freq=40.7KHz

Good luck to all EclipseMob members!

73 de df3lp,
Peter

PS: chart from 1999-08-11 eclipse:
http://www.qsl.net/df3lp/projects/eclipse/index.html