[aprssig] Interesting APRS RF Behavior at Dayton....

Randy Love rlove31 at gmail.com
Fri May 16 22:45:50 CDT 2014


The W8FSM igate rf deck is a commercial vhf mobile with a good front end.
It hears plenty, it's just our Internet connectivity has severe latency
allowing the pallets from the other igates to make it to the APRS-IS before
ours do.

Randy
WF5X
 On May 16, 2014 9:32 PM, "Gregg Wonderly" <gregg at wonderly.org> wrote:

> I’d guess that most likely the front ends are overloaded with RF in
> general.  Overall, that’s a horrible place to try and receive something.
>
> Gregg
> W5GGW
>
> On May 16, 2014, at 5:00 PM, Stephen H. Smith <wa8lmf2 at aol.com> wrote:
>
> > I currently have my special events UI-Webserver (normally used for
> balloon launches) displaying all the RF activity within 6 miles of the
> Dayton Hamvention.    See it at:
> >
> >     <http://wa8lmf.net/map>    Click on the "Special Events" server
> link.
> >
> > Note that I am filtering for a radius of 6 miles around the venue, while
> the range scale of the map display is only 1 mile; i.e. the immediate
> vicinity of the event.   Click the list of "All Stations Heard" below the
> map to see stations at numerous motels in the area as well as actually at
> the Hara Arena. Sixty-plus stations are currently being heard within 6
> miles of Hara.....
> >
> > =========================================================
> >
> > Looking locally at the details in the "Stations Heard" list, I am
> noticing a somewhat odd behavior.    There are two stations on-site at the
> Hara Arena (venue of the Hamvention)serving as igates:   W8FSM-11 and
> ON6WFO-10 .  W8FSM is also acting as a digipeater (god only knows why in
> this temporary patch of TOTAL RF SATURATION).
> >
> > However the vast majority of stations in the area are being igated by
> either W8GUC (about 5.5 mi / 8.8 km north-east)  or W8VFR-1(about 20 mi /
> 32 km southwest) of the arena.    Are the on-site igates so totally
> overloaded by the 2-meter RF onslaught that they aren't hearing anything?
> >
> >
> >
> > ______________________________________________________________
> >
> >
> > --
> >
> > Stephen H. Smith    wa8lmf (at) aol.com
> > Skype:        WA8LMF
> > EchoLink:  Node #  14400  [Think bottom of the 2-meter band]
> > Home Page:          http://wa8lmf.net
> >
> >
> > Long-Range APRS on 30 Meters HF
> >    http://wa8lmf.net/aprs/HF_APRS_Notes.htm
> >
> > High Performance Sound Systems for Soundcard Apps
> >   http://wa8lmf.net/ham/imic.htm
> >   http://wa8lmf.net/ham/uca202.htm
> >
> > "APRS 101"  Explanation of APRS Path Selection & Digipeating
> >  http://wa8lmf.net/DigiPaths
> >
> >
> > _______________________________________________
> > aprssig mailing list
> > aprssig at tapr.org
> > http://www.tapr.org/mailman/listinfo/aprssig
>
> _______________________________________________
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