[aprssig] is there a new APRS-IS server filter restriction?

Pete Loveall AE5PL Lists hamlists at ametx.com
Thu Nov 5 09:26:18 EST 2015

Some servers do have a restriction on the radius for the range filter to prevent someone from trying to define essentially a full feed on a filter port.  This value is adjustable by the sysop of the server as they know best what they want their server environment to support.  This is not a recent addition to server filtering and, because it is adjustable by the server sysop, is not a restriction on all servers.  That is why you may think it is a new server build when, in fact, it has been around for some time.


Pete Loveall AE5PL
pete at ae5pl dot net

> -----Original Message-----
> Sent: Thursday, November 05, 2015 7:58 AM
> Subject: [aprssig] is there a new APRS-IS server filter restriction?
> I was doing some testing on my APRS client program, and noticed I wasn't
> getting data corresponding to one of my filter expressions on my APRS-IS
> connection. For r-type filters (r/lat/lon/radius), is there a maximum radius
> allowed? I had bumped the radius up to a couple thousand kilometers to do
> some load testing, and today I suddenly wasn't getting anything from that
> filter (I was still receiving station packets for other filter expressions that
> either weren't r-type or had a smaller radius in the 100-kilometer range).
> Has a new APRS-IS server build been released that would prevent large
> radius filters?

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