[OZAPRS] Beacon Intervals - Reminder
Terry Neumann
tfneumann at internode.on.net
Sun Aug 30 12:13:45 EST 2009
Andrew Rich (Home) wrote:
> Here's a thought for you
>
> If I keyed up on 145.175 MHz on the top of a hill that would be
> considered intentional interrference
>
> So at at what point does a high beacon rate border on being interference ?
>
> There is NO protection against it.
Unless of course we realise/remember that we are using a shared resource
which requires us all to co-operate in our usage of the system for the
common good of all users. And that's one of the things we do in
amateur radio. Along with not using 400 watts of SSB on the "wrong"
sideband, or in the middle of the CW segment of a band; or using
unacceptable language on the repeaters; or tuning up on HF on top of an
exiting QSO (and taking 60 seconds to do it); or beaconing one's
position on APRS every three seconds..... you get the drift.
Fact is that APRS more than any other mode requires, and indeed demands
that kind of co-operation.
> So at at what point does a high beacon rate border on being interference ?
There is no concrete point at which this might happen. However those
who have been in this game for a while have determined certain
parameters as a basis for the co-operative usage of the APRS system to
the mutual benefit of all users. These parameters are well publicised
- admittedly you need to belong to a group like this be aware of them,
or else take the trouble to search for them - but they exist, and they
are there for a reason. Those who choose to do otherwise out of
ignorance can be excused - for a little while. However, as in any of
the instances above, they need, in time, to learn about the basics of
co-operation with others to the benefit of all users.
> There is NO protection against it.
Correct - but only to a degree. You see, there is no protection
against people driving in the centre lane 20 kph below the speed
limit. There is no protection against someone waiting at the traffic
lights for ten seconds after the green light before moving off. There
is no protection against someone breaking wind in a crowded lift.
There is no protection against people acting selfishly on the amateur
bands. But one of the things that distinguishes us from lower forms of
life is that (usually) formal protection from any of the above quite
legal (but totally unacceptable behaviour) rarely becomes necessary.
Education is the answer. If after education, the selfish behaviour
continues then other means of "enforcing' co-operation may come into
play. But of course that won't be necessary will it. I'm sure that
once people know how the system works, and why it needs to work within
the voluntary guidelines set out by those who have thought about these
things, they will be happy to co-operate.
73
Terry
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