[amsat-bb] Re: Digi @ Dayton?
zack.kd8ksn at hotmail.com
Mon May 16 09:59:03 PDT 2011
What you say does make sense - I didn't think about the digi congesting the
network since everyone would be within simplex range. My main concern is
that I can get digipeated using the stock duck on the TH-D7A that I will be
using for backpack APRS. If I can't reach any digipeaters in the area, I
need to go to plan B for an antenna.
From: Bob Bruninga
Sent: Monday, May 16, 2011 10:24 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: Digi @ Dayton?
> [does] anyone set up a digipeater at Dayton,
> or do we rely on the local digi’s?
Proper operation of an event like Dayton would suggest that putting up a
digipeater would be the worst thing to do. With over 300+ mobiles and
portables beaconing away all in simplex range of each other, a digipeater
would do nothing but drastically reduce the reliability of the channel by
half or more.
The proper way to handle a ham radio event with a massive influx of APRS
operations is to:
1) Have no digi at the focal point (Hamvention)
2) Have all digis going out 30 miles in all directions be ONE-HOP DIGIS
ONLY. That is, they only respond to WIDE1-1 or WIDE2-2 and nothing else.
They digipeat once and do callsign substitution so the packet goes no
3) Strategic IGates are placed right at Hamvention so they hear everything
in simplex range
4) Additional IGates are configured so that every surrounding digi going out
30 miles has an IGate to hear the one-hop packets.
5) Doing all the above, then the hundreds of APRS mobiles and portables do
not have to change anything. They just drive into town with their normal
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