[aprssig] Fwd: Re: [UI-View] Interesting APRS RF Behavior at Dayton....

Randy Love rlove31 at gmail.com
Fri May 16 22:15:28 CDT 2014


---------- Forwarded message ----------
From: "Randy Love" <rlove31 at gmail.com>
Date: May 16, 2014 11:13 PM
Subject: Re: [UI-View] Interesting APRS RF Behavior at Dayton....
To: <ui-view at yahoogroups.com>
Cc: "Fred Moses" <fred at moses.bz>

W8FSM-14 is hearing plenty. It's just our Internet is via Verizon 4G card
and our APRS-IS injects aren't beating the other igates because of the
delay due to cellular saturation in the area of the arena. We tried to get
an Internet drop from Hara well before the event,  but they never returned
our calls. It is a full service igate (bidirectional) and contained in a
small package along with a fully linked analog uhf voice repeater at the
booth in the North Hall.

As for why it is digipeating, this was to allow users inside the arena a
chance to get readable signals to those outside the arena and to local
igates in the event that our Internet link fails.

Randy
WF5X
On May 16, 2014 6:15 PM, "'Stephen H. Smith' wa8lmf at aol.com [ui-view]" <
ui-view at yahoogroups.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
>
> [Non-text portions of this message have been removed]
>
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> UI-View website: http://www.uiview.org
>
> UI-View Registration: http://www.apritch.myby.co.uk/uiv32.htm
> Select language & fill in your name and callsign. Return later
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>
> APRS Server List: To update the APRS Server List, change the
> download URL to... aprs2.net/APRServe2.txt
>
> For North American users, Precision Mapping 9.0 along with
> PMapServer 9 can provide street level mapping for all of North
> America. They can be installed without hassle on Windows 7 & 8.
> PMapServer is available for download on the UI-View website.
>
> Users of Windows Vista, 7 or 8 should not install UI-View below
> Program Files. Instead, create a folder elsewhere.
>
> Useful hints and tips about setting up and using UI-View are
> available on Stephen WA8LMF's website.
> http://www.wa8lmf.net/aprs/UI-View_Notes.htm
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