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[aprssig] Automatic Voice RFelay System (AVRS) and ALLSTAR

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Mon Sep 17 21:16:24 UTC 2012


On 9/17/2012 5:07 PM, Andrew P. wrote:
> Whoops! Do you have me mixed up with someone else? ;-)

Yes, and my apology!  I can't keep myself straight let alone who has 
authored what...

> What about non-periodic messages at state-change times only? Since both the Echolink/Allstar/IRLP/??? gateways and the AVRS are up 24x7 and connected via reliable wired Internet links, they don't need constant beaconing.

Well, if a node doesn't change state while you happen to be driving 
through,  you'd never know it was there.  Periodic beaconing is a good 
idea for local situational awareness.   Every 10 minutes maybe, but 
IMHO, at least every 30 minutes.  Then local IGates have a chance to 
pick it up from the -IS and put it out to RF if desired.

> Also, I note that there are several IRLP and Echolink gateways in my area that are beaconing anyway (not my doing) and being gated to the APRS-IS. If they put the additional state that AVRS needs in their beacons, it would be done (just more difficult for the AVRS server to filter out of the APRS-IS flood).

Seems like the repeater object from the local information initiative 
would be an excellent starting point.  Are your local nodes compliant 
with that at least?

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
(Yes, that's in my tag line so I don't forget what it is I do...)


>
> Up to $.03. ;-)
>
> Andrew Pavlin, KA2DDO
> author of YAAC, not of AVRS ;-)
> ------Original Message------
> From: Lynn W. Deffenbaugh (Mr)
> To: aprssig at tapr.org
> Sent: Sep 17, 2012 4:45 PM
> Subject: Re: [aprssig] Automatic Voice RFelay System (AVRS) and ALLSTAR
>
>
> That would be wonderful, but when I offered to periodically update APRS
> objects for EchoLink nodes, I was resoundingly shot down because of the
> increased load on the APRS-IS.
>
> I am considering a QRU-like server for these objects that would probably
> be the best hope.  (http://aprsisce.wikidot.com/doc:qru) As a matter of
> fact, since you've already got all the data in your server, and are
> already fielding APRS messages, you'd be a shoe-in for implementing such
> a thing.  Drop me a line for details if you're interested.  It's really
> straight-forward.
>
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
>
> On 9/17/2012 4:37 PM, Andrew P. wrote:
>> Perhaps a new APRS message could be defined specifically to beacon such gateways with the relevant parameters (most of which are in the standard position message anyway). Then we wouldn't need a back-door URL to get the data; AVRS could just use a type-filtered feed to get all the gateway beacons (regardless of which net they are on).
>>
>> Just my $.02.
>>
>> Andrew Pavlin, KA2DDO
>> ------Original Message------
>> From: Bill Vodall
>> To: aprssig at tapr.org
>> Sent: Sep 17, 2012 1:49 PM
>> Subject: Re: [aprssig] Automatic Voice RFelay System (AVRS) and ALLSTAR
>>
>>
>>> I.e. I need callsign, node number, lat/lon of node, RF characteristics
>>> (freq/offset/tone), and status (connected, listening, down, etc)
>>> Given that data I can poll it, update a local DB, map the nodes, and make
>>> AllStar part of the AVRS protocol.
>> Will this info be generally available on the APRS-IS so we can easily
>> bring it to the RF domain without doing Internet magic...   (Yes - I
>> know APRS-IS == Internet but there is a subtle difference...)
>>
>> 73
>> Bill - WA7NWP
>>
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>>
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