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[aprssig] Xastir v2.0.0 has been released

Richard Seguin ve9it at rac.ca
Mon Nov 8 18:09:04 UTC 2010


Does anyone else have problems where Ubuntu (or maybe the kernel that it
uses) cannot open a USB serial port?  The problem is preventing me from
running Xastir at the moment.

On Wed, Oct 27, 2010 at 4:21 PM, Curt, WE7U <curt.we7u at gmail.com> wrote:

> On Wed, 27 Oct 2010, Keith VE7GDH wrote:
>
>  Actually, fixed stations (and anything that flies more than knap of the
>> earth)
>> shouldn't use WIDE1-1 at all. Only mobile stations should make use of
>> fill-in digis. It would be pretty rare for a fixed station to not be able
>> to
>> hit a WIDEn-N digi, unless they are out in the boonies where there just
>> isn't any coverage at all, and it would be pretty rare to have an IGate
>> that
>> couldn't hear, and be heard by, one or more WIDEn-N digis. Basically,
>> fixed stations usually don't have power constraints and more than likely
>> have better antennas than mobile stations, and they aren't dealing with
>> fades and changing multi-path.
>>
>> Of course, the "rule" about fixed stations not using WIDE1-1 is more
>> important when the station is on a hilltop, and even more important when
>> they are surrounded with a bunch of fill-in digis. If they are on a
>> hilltop
>> there are a whole bunch of fill-in digis in the valleys around them, you
>> are almost 100% guaranteed that they can hit the same WIDEn-N digis
>> that the fill-in digis can hit. It is also more important in more
>> populated
>> areas where conserving bandwidth is more of an issue.
>>
>
> Agreed.  I used to live in a place where I had difficulty getting
> out at all (in the mountains, at -450ft HAAT.  Yes, that's a minus
> sign).  Depending on my propagation on 2m/220 and which
> multipath/knife-edge diffraction was working for or against me at
> that instant, I sometimes needed help to get out to the WIDEn-N
> digis.  Ordinarily that's not needed, so use WIDE2-2 for PATH 1.
>
>
> --
> Curt, WE7U.                         <http://www.eskimo.com/~archer<http://www.eskimo.com/%7Earcher>
> >
>   APRS:  Where it's at!                    <http://www.xastir.org>
>  Lotto:  A tax on people who are bad at math. - unknown
> Windows:  Microsoft's tax on computer illiterates. - WE7U.
> The world DOES revolve around me:  I picked the coordinate system!"
>
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