[aprssig] ID requirements...
ron.stordahl at digikey.com
Mon Nov 8 15:29:04 CST 2004
Thanks for your reply. I had decided to send beacons every 10 minutes
(local only..i.e. null via) and then every 30 minutes send a beacon
with WIDE2-2. But your reply adds a number of things which I had not
To start with my remote digi's are UIDIGI firmware in MFJ1270C's, while
your article appears to describe such settings for the KPC3+. UIDIGI
does offer some flexibility in beacon transmissions, but probably not
quite enough to do the job exactly right, but it's close. UIDIGI
provides for 3 beacons. Each beacon can have different text, a
different via route, including null, and each beacon can have a
different repetition rate as well as an 'offset time'.
The best I can come up with using UIDIGI is this:
Beacon 1 sent every 600 seconds, with a time offset of 0 seconds, and a
Beacon 2 sent every 3600 seconds, with a time offset of 0 seconds, and
Beacon 3 sent every 3600 seconds, with a time offset of 1800 seconds,
and via WIDE2-2.
For simplicity lets assume that everything starts up at the top of the
hour, then Beacon 1 will occur at 0, 10, 20, 30, 40 50 minutes past the
hour. Beacon 2 will occur at 0 minutes past the hour. Beacon 3 will
occur at 30 minutes past the hour. Unfortunately when Beacon 2 occurs
Beacon 1 will also be sent, just as when Beacon 3 occurs Beacon 1
will also be sent. UIDIGI doesn't provide quite the flexibility to do
exactly as you describe on
http://web.usna.navy.mil/~bruninga/aprs/digi-rates.txt. The two 'extra'
beacons per hour will however have null via routes which helps. At
least this is my reading of the UIDIGI documentation. I will test this
by making remote sysop changes on one of my nearby UIDIGI's. I think
this is the best I can do.
Perhaps someone more experienced with UIDIGI has a better way to program
Your document DIGIPEATER IDENTIFICATION (POSIT and POSIT COMMENT)
PLANNING says that each beacon should have identical text. I can
certainly do this, but I was not aware that this would be an issue as
long as the position portion of the beacon was unchanged.
More information about the aprssig