[aprssig] Local Event using RELAY?
bruninga at usna.edu
Tue Mar 29 10:26:29 CST 2005
>>> kb8uih at sbcglobal.net 3/28/05 11:09:02 PM >>>
>If it is only hearing on .99, then it will only digi what it
>hears, won't it? If it only hears on .99 then it
>would only retransmit what it heard on .99. Why is
>that so bad?
The debate is over ideology. To me, running a very
low power 1W tracker and digipeating it through your
50W mobile out in the boonies is no different than
running the 50W mobile as the tracker in the first place
(though it is a lot harder to carry while walking)...
The fact that the 50W mobile wont hear any other local
traffic in the first place (other than the distant digi) means
it cannot do anything about collision avoidance to other
users in either case anyway...
Yet the richeous will condem your use of the mobile as a
digi for your tracker which -isnt listening- while saying it is
just fine to use the mobile (which -is- listening but -cant-
hear any other users). Though the impact on the network
Let common sense prevail in each case...
--- Robbie Robertson <mwrobertson at comcast.net> wrote:
> That then makes the TMD-700 to transmit on 144.390
> without listening
> first and thus qrm'ing anything else on 144.390.
> That is not the right
> way to operate period.
> We have had this discussion before, and others
> agreed. If there is no
> other transmission being heard by a station, it is
> assumed ok to
> transmit, but just to turn on without listening for
> a signal is wrong.
> If the event stations on 144.990 were to be
> transmitting at a fast rate,
> even at 30 seconds, and 4, 5 or more units, then the
> TMD-700 would be
> constantly key down irrespectful of other activity
> on 144.390. I think
> every tracker from tt to whatever, at least has
> "Activity" hold off!
> To suggest that others do this is not correct.
> Robert Bruninga wrote:
> >>>>Boyd D Garrett Sr <N5CTI at texasnative.com> >>
> >>I plan to support a public service event from my
> >>(TH-D7)... so Net Control can track my position. I
> >>virtually no chance of getting into a WIDE digi
> >>so I plan to have my truck in the vicinity with my
> >>TM-D700 set for RELAY digipeating.
> > Then I would set your mobile DIGI to RELAY but set
> > to listen on 144.99 and TX on 144.39. Then
> > all trackers at the event on 144.99. That way
> > get a 100% clear channel and yet the event and
> > everything else shows up on 144.39
> > Bob
> > _______________________________________________
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> > aprssig at lists.tapr.org
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