[CCF] FW: [CQ-Contest] 3Y0X, topband,
and propagation - can you help?
jukka.klemola at nokia.com
jukka.klemola at nokia.com
Fri Dec 17 05:19:34 EST 2004
vapaaehtoiset kirjoittaa HEP !
> -----Original Message-----
> From: cq-contest-bounces at contesting.com
> [mailto:cq-contest-bounces at contesting.com]On Behalf Of ext Eric Scace
> Sent: 16 December, 2004 17:12
> To: Cq-Contest; YCCC; PVRC
> Subject: [CQ-Contest] 3Y0X, topband, and propagation - can you help?
> Hi everyone --
> After the 3B9C DXpedition earlier this year, Eric K3NA
> built some animated views of interesting 160m openings to
> North America.
> These have been shown during presentations at Dayton, HamCom,
> and W9DXCC. The animations revealed some interesting subtleties of
> spotlight propagation and potential skew paths over the very
> long haul between Rodrigues and North America, especially to the west
> But a string of logged QSOs does not fully reveal what was
> experienced by the many topband operators who were receiving (or
> trying to receive) the 3B9C signal at any given moment.
> Next month Eric will be one of the topband operators at
> 3Y0X. We want to develop, and report back to you, a fuller picture of
> 160m propagation during that DXpedition. To this end, we are
> planning to provide a standardized reporting form on the
> www.peterone.com website with which any 160m operator can log
> what he or she hears during the course of an opening. A more complete
> description of the reporting features is attached below --
> and we welcome your comments on this concept.
> In developing this concept, we came to realize that all
> topbanders would be interested in a real-time display, on an
> automatically-updating webpage, of what reception reports
> have been recently logged. Alex VE3NEA (author of the awesome DXAtlas
> program) has developed a display that can form the basis of
> an animation showing, minute-by-minute:
> -- the grayline
> -- an icon for each reporting station, indicating received
> signal strength and the range of azimuths from which the signal is
> arriving (if suitable antennas are present at that station).
> However, we find that we don't have all the resources we
> need to implement a real-time, animated webpage. So we are now
> appealing to the Topband community for help. Here is what we need:
> 1) A Windows-based web server on the Internet with a
> static IP address. Because DXAtlas and the mapping programs
> can not run on
> a virtual server, this may need to be a dedicated machine
> between now and the end of the DXpedition (about Feb 6). The accrued
> database of reports should be archived and can be removed
> from the machine in mid-February when the team has returned home (we
> 2) A person who can install and configure our application
> on that server during both the development/testing phase and the
> DXpedition itself.
> 3) Someone (or group) who can design an appropriate set
> of web pages so that reporting stations can:
> -- describe their receiving setup (once, before the start
> of the DXpedition)
> -- submit one or more reception reports.
> [Alex VE3NEA can write a script to save this data in a file
> format suitable for generating the DXAtlas map images.]
> 4) Someone (or group) who can design a web page that will
> display the most-recent 10 minutes (or so) of map images in a loop, in
> a manner similar to weather radar on-line displays... or a
> range of times (for non-real time viewing, perhaps after more reports
> have been received).
> If you can assist in any of these 4 areas, please contact
> us at the email addresses listed on the cc line. (While it may be
> possible to implement this with Linux/Unix servers, we don't
> have a map/grayline software tool for that environment, so porting to
> Linux seems even more complicated -- unless a very talented
> individual steps forward, hi!)
> Thanks for your attention to our little dream project. We
> wish we had started this a bit earlier... but there were some other
> things do to first (build antennas, pack the shipping
> container, etc.) We hope this sounds as exciting to you as
> it seems to us.
> We're keeping our fingers crossed that the right assistance
> is available for the real-time display feature! Feel free to
> this appeal to others outside the topband reflector community.
> Eric K3NA
> Don N1DG
> Alex VE3NEA
> David VK4GL
> Reporting features:
> A. Station description: provided once only.
> -- callsign.
> -- email address (for follow up questions after the DXpeditions).
> -- latitude/longitude of station site.
> -- list of antennas used to receive on 160m.
> -- for each antenna listed above, the range of azimuths
> over which this antenna hears better than the other similar
> antennas tthat
> cover adjacent ranges. In other words, if you say the 3Y0X
> signal is loudest on your beverage #1, and you've reported hear that
> beverage #1 hears best over the azimuth range of 90-180°
> compared to your other similar antennas, then we will assume
> the signal
> from 3Y0X is probably arriving from this general direction.
> A large 160m station may have antennas with overlapping
> ranges; e.g., a
> 4-square (four sets of azimuth ranges) and various beverages
> (one of which will be the best at a particular moment compared to the
> other beverages).
> B. Reports:
> -- callsign
> -- date/time (Z)
> -- antenna with best reception (from the list provided in
> the station description above).
> -- current noise level on that antenna (S units or dB over S-9).
> -- 3Y0X signal level on that antenna (S units or dB over S-9).
> -- is this the first moment 3Y0X has been heard this opening?
> -- is this the moment that 3Y0X's signal peaked at your
> location during this opening?
> -- is this the last moment 3Y0X was heard during this opening?
> Each station may report as frequently as they wish, up to
> once per minute. Note that multiple openings might occur during a
> particular night, so it can be entirely appropriate to report
> more than one set of start-peak-end times.
> We will try to design the form so that multiple reception
> reports can be entered at one time.
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