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[aprssig] 9600? Faster?

Curt, WE7U archer at eskimo.com
Thu Jul 7 15:53:12 UTC 2005


On Thu, 7 Jul 2005, Phillip B. Pacier wrote:

> Robert Bruninga wrote:
>
> >Same here.  We did extensive tests with 4 different
> >radios over 200 feet separation using lab attenuators
> >and a very long run of RG58 to eliminate any chance
> >of leakage.  The diffrence was 7 dB.  So it takes
> >50W at 9600 to equal 10W at 1200 baud.  Or
> >about half the range.
> >
> >
> I have heard you say this before, and we have just not found this to be
> the biblical case here in southern California.  Mobile works fine.
> Distance from station to station is the killer.  Maybe it's the
> soil....maybe it's the earthquakes... it just works here. :)

Might part of this be the different pre-emphasis used on some of the
9600 baud rigs/TNC's?  I recall that being a problem.  Or was that
just the 1200 baud pre-emphasis on the Kenwoods that was different?

--
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
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