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On 8/4/2010 11:20 AM, Lynn W. Deffenbaugh (Mr) wrote:
<blockquote cite="mid:4C59AF53.10108@homeside.to" type="cite">Being
a non-UI-View user (so don't tell me to read the "excellent help
file"), what does "Meteor Mode" actually do different than any
other mode?
<br>
<br>
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and
Win32
<br>
<br>
</blockquote>
<br>
It overrides many of the normal operating defauts, such as beacon
rates & patterns, paths and ports. Quoting from the "Meteor
Mode" paragraph of the UI-View help system:<br>
<br>
=============== PASTE================<br>
<br>
Meteor Mode Setup<br>
UI-View32 Meteor Mode is a special mode in which the program can be
used to transmit beacon frames very frequently. It is designed to be
used for meteor scatter propagation tests.<br>
<br>
Two different modes of operation are possible - "Interval" mode and
"Burst" mode.<br>
<br>
<ul>
<li>Interval Mode - A single beacon frame is transmitted at a
specified time interval.<br>
<br>
</li>
<li>Burst Mode - Beacon frames are transmitted continuously for a
period of seconds. You can specify how long the burst should be,
and when you want it to start in terms of the number of seconds
into each minute<br>
.</li>
<li>Port - The port on which you wish to use Meteor Mode.<br>
<br>
</li>
<li>Unproto address - The address to which you want to send the
beacon frames, including any digis. The destination address and
digis should be separated with commas, do not used 'V' or 'VIA'.
Examples - CQ would address the beacon frames to CQ, CQ,RELAY
would address the beacons to CQ via RELAY.<br>
<br>
</li>
<li>Beacon - The text of the beacon you want to send. For meteor
scatter use, the beacon should be as short as possible. The
shortest beacon that can usefully be interpreted by APRS
software is probably your IARU locator surrounded by square
brackets, e.g. "[IO92XX]", and that is the beacon you are
recommended to use.<br>
<br>
</li>
</ul>
NOTE - The following four automatic beacon input buttons cannot be
used until you have input your latitude and longitude in Station
Setup.
<ul>
<li>Grid - Automatically input a grid square beacon.<br>
<br>
</li>
<li>Grid-in-status - Automatically input an APRS "grid in status"
format position beacon.<br>
<br>
</li>
<li>Posit - Automatically input a normal APRS position beacon.<br>
<br>
</li>
<li>Comp'd - Automatically input a compressed APRS position
beacon.<br>
<br>
</li>
<li>Interval (only used in Interval mode) - The interval, in
seconds, at which you wish to transmit a single beacon.<br>
<br>
</li>
<li>Start (only used in Burst mode) - The number of seconds into
each minute at which you want the burst of beacon frames to
start. You can specify more than one time, e.g. "0,30" would
mean "start a burst at 0 seconds into each minute and another
burst at 30 seconds into each minute". If you were conducting a
trial with someone, then they might specify "15,45", so that
your transmissions interleaved.<br>
<br>
</li>
<li>Duration (only used in Burst mode) - The length in seconds of
each burst of frames. UI-View converts the specified duration
into a number of frames to send. The calculation is accurate,
but it makes two assumptions - (a) that you are using 1200
baud, and (b) that your TNC will transmit continuously when fed
with a stream of frames. If your TNC releases the PTT every few
frames (the TH-D7 appears to behave in this way.), then you will
need to make allowances for it, because a specified duration of,
say, 10 seconds, will result in an actual burst length of
perhaps 15 seconds.</li>
</ul>
========= END PASTE =========<br>
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