[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[IRCA] 1610 kHz UNID Tone and Thoughts
- Subject: [IRCA] 1610 kHz UNID Tone and Thoughts
- From: Mike Hardester <DX4EVR@xxxxxxxxxxxxx>
- Date: Wed, 09 Nov 2005 21:05:36 -0500
Noted in Jacksonville, on truck radio, at 1404-1420 (moving) and
1420-1428 (parked). Signal varied in strength both while I was
moving, and once parked. Level ranged from near excellent to absent.
Should have checked the fade duration, but didn't. I got the
impression that the "fading" was not real. That is, it seemed too
rhythmic/smooth to be natural fading -- more like power being
gradually/automatically increased and decreased over and over.
Naturally, by the time I got home, 1530 ELT, it was off. I tried to
plot a rough DF chart based on reported loggings and apparent
bearings, but I'm not too certain, hi!
Shorewood, IL: directly E/W, so it eventually crossed the other 3
paths - at points all in the northeast
State College, PA: crossed Lilburn, GA, near Monterrey in Mexico
Greenville, SC: crossed very close to the Lilburn, GA, reference
point....Brock - what are you up to? Hi!!
Theories? All kinds. For the technical people out there, and in line
with David Gleason's comments,
"Could Kintronic have some kind of authorization to test the antennas
at a higher power? They may be looking into some of the concerns
about the antennas? There have been reports about the need for
analysis of skywave angles and directional usage of the Kin-Star
antenna. They have a paper on the system at
http://www.kintronic.com/site/techpapers/KTL_NAB_Paper.pdf so you can
see the current state of the design of these low-height antennas that
perform much like a conforming quarter wave (90 degree) tower. At the
end, it says that operation in DA systems is subject of further
development... maybe that is what we have here?"
Just a thought here on my part -- during 9/11 and the recent
hurricanes, the biggest complaint has been the lack of reliable
communications (planning and implementation close seconds). What IF
you had a series of transmitters (relays, if you will) using
specialized antennas ALL transmitting the same information (perhaps
multi-channels with different info on the various channels) to other
stations for rebroadcast? Any station could initiate traffic.Thus,
even if some stations are disabled, the "message traffic" gets through.
As an example - a station in San Francisco wants to send traffic to
Washington, DC. Relays in Cheyenne, WY, and Omaha, NE, are off-line.
One substitute path might be SF > Houston > State College, PA >
Washington, DC. Again, via other relays between these points. Or,
perhaps, SF > a site in ND > to Shorewood, IL > DC.
My point - depending where each station is located, and how many
stations there are, you could conceivably cover the United States
with a series of sites, almost guaranteeing communications. Also,
nothing says that the stations have to transmit on 1610 kHz. With
modifications, the frequency may be above 1610, or down into the
longwave range.
How will the government know if the plan is workable? They may already know.
I'm not a technical type, so my ideas may be full of QRM. Just my thoughts.
Mike
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://arizona.hard-core-dx.com/mailman/listinfo/irca
Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers
For more information: http://www.ircaonline.org
To Post a message: irca@xxxxxxxxxxxxxxxx