[aprssig] Help With Filter on Xastir

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Tue Jun 3 09:36:01 EDT 2014

The filter below is asking for all stations within 500 km of the 
coordinate given AND ALSO INCLUDE all stations starting with ZL, ZM, or 
ZK.  I suspect if you look, all of the further-away stations start with 
one of those prefixes.

APRS-IS filters are OR'd together, not AND'd.  There is a negate 
capability which makes the negated term an AND NOT, but there is no AND 
ONLY capability in the base APRS-IS filter specification.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 6/2/2014 11:57 PM, Peter - ZL2BAU wrote:
> Hi All,
>         I am having a problem in setting the filter on a T2 server 
> when I log in, I have tried all sorts of combinations and I just can 
> not make it work, this is what I have :
> I am using sydney.arps2.net
> r/-44/171/500 p/ZL/ZM/ZK
> It is the 500 km setting that does not appear to work for me.
> The Xastir version is V2.0.1 running on Ubuntu 10.04.4
> What am I missing ???
> I still see stations far in excess of the 500 km setting.

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