[aprssig] Fill-in Digis

Curt, WE7U archer at eskimo.com
Fri Mar 24 11:02:53 CST 2006

On Fri, 24 Mar 2006, Robert Bruninga wrote:

> The Fill-in digi attempts to better balance that
> situation.  THink of the tier of out-lying fill-in
> digis as just like a big voice repeater with remote
> site receivers.

That is _exactly_ how I think of it!

That's pretty much how it works for my mobile.  With all the canyons
and hills/mountains around, we need these fill-in digi's in order to
provide better coverage for the mobiles/portables around here.

Another option is to run high-power from the mobiles.  That can help
the one individual to a point, but trashes everybody else on channel
that _might_ have gotten in otherwise.  Unfortunately the gains by
running high power are difficult to refute, so it takes a bunch of
education to get those users to back down again.  I was one of them
a few years back until I "saw the light".

> 2) But he hears the digi just fine at the same
> distant location.

The mobile can't always hear as well as it talks, due to vehicle
electrical system noise, computer noise, etc.  I find that I can
hear quite well if the engine is off, but not otherwise.  Perhaps
its just my particular installation though and others have better
luck while moving.  A sample of one is hard to do statistics on.

Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"

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