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[aprssig] Failed APRS?

Jason Rausch jason at ke4nyv.com
Mon Jan 19 21:41:01 UTC 2009


Tom said:

> Indeed, sounds like he bought a TX-only tracker and is
> surprised that
> it doesn't know when the channel is clear.

He did.  He made it very clear that he was running a 10 WATT MicroTrak.

Jason KE4NYV
RPC Electronics
www.rpc-electronics.com


--- On Mon, 1/19/09, Tom Hayward <esarfl at gmail.com> wrote:

> From: Tom Hayward <esarfl at gmail.com>
> Subject: Re: [aprssig] Failed APRS?
> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
> Date: Monday, January 19, 2009, 4:38 PM
> > He is angry that his vehicle TRACKING isn't what he
> expected it to be.
> 
> Indeed, sounds like he bought a TX-only tracker and is
> surprised that
> it doesn't know when the channel is clear.
> 
> In an attempt to relieve congestion, I've found that
> every digipeater
> in my area can reach an igate, and covers enough distance
> to reach my
> tactical team members. So I usually run 1 hop, WIDE2-1.
> 
> Another way to relieve congestion is the move to 9600 baud.
> There is a
> 9600 baud APRS network on 144.35 in western Washington and
> western
> Oregon that is seeing lots of recent growth. 9600 baud
> provides more
> bandwidth and shortens the burst time so the signal is less
> susceptible to mobile flutter and QRM. Messaging works
> between the
> 144.35 and 144.39 networks because they just act like any
> other
> distant RF network--the igates know where to find you.
> 
> Yet another congestion relief idea is to move igates to the
> digipeater
> site. This cuts the required messaging congestion in half
> (I know, not
> much of a problem), but also allows tracking-only users to
> run one
> less hop, keeping them from congesting my tactical network.
> VHEBO is
> set up this way (http://aprs.fi/?call=vhebo).
> 
> Alas, there is still a lot of educating to do on basic
> paths and
> beacon frequency. WA7NWP has set up a way for us to monitor
> this is
> the Pacific Northwest:
> http://srv02.compumont.com/wa/check.html
> 
> Tom KD7LXL
> 
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