[aprssig] Satellite positions: FREQUENCY
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Tue Oct 18 20:06:57 CDT 2011
The DIGI_NED model only works when directly connected to local RF. And
that requires local operators to do the configuration and maintenance to
keep it going.
I'm trying to offer a globally-accessible satellite information
service. I'm not trying to replace what DIGI_NED has accomplished at
the local level, but provide something new and functional from a much
broader perspective and service area. And without QRMing the local RF
channel when no-one is listening.
There is no way in APRS for a central server to push information out to
a local RF APRS network except by sending an APRS message directed to a
station that was recently heard local to an IGate. And the only way to
reliably know that is to design and implement a centralized query /
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
On 10/18/2011 7:41 PM, Bill Vodall wrote:
>> I still believe that the best possible use is to query when you think you've
>> got time to work the satellite.
> I have to come back to the DIGI_NED model. One packet per bird every
> 10 minutes with the next predicted AOS (or something) time. Then when
> it's in range, one packet a minute with current information.
> It's surprising how one finds the time to bounce a few packets through
> a bird or listen to the channel when it just happens to be opportune.
> DIGI_NED has the poll feature. Used it once to verify it works and
> never went back.
> Bill - WA7NWP
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