jump to first page aprs in charleston, sc a presentation by kd4rdb
TRANSCRIPT
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APRS in Charleston, SCA presentation by KD4RDB
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APRS Introduction
APRS is used to: Track people graphically Send messages Track weather systems
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APRS Packet Overview
Packets Travel from One Digipeater to Another The Digipeaters are only concerned with
distributing APRS type data. The data can contain Position Information,
Objects or Messages Digipeaters route packets on the air IGATEs route packets through the internet GATEs route packets between frequencies
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Internet
How Does an APRS Position Report Travel?
A Position Report Bounces From One “Digipeater” To AnotherSince APRS Packets Aren’t Addressed To A Particular Station,
Anyone Can Hear Them
And If An IGATE Station Hears The Position Report,
It Is Passed On To the Internet For Everyone To See
The Data Moves Outward In Tiers
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Once on the Internet, a detailed map or photo of the station can be accessed.
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Home Users
PC, MAC, Palm, or WinCE TNC or Sound Card Scanner or Radio Internet Connection
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Mobile Users
‘Dumb’ Tracker Ham HUD Kenwood Laptop
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Tiny Trak 1•$25 TNC inserts in line with your microphone
•Works with 2M voice rig
•Stand alone or MIC-encoder hookup
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Tiny Trak 2•$25 TNC
•Works with 2M voice rig
•Supports SmartBeaconing
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Mic-Encoder Repeater•Adds APRS ability to users with one radio.
•Interfaces with repeater controller
•Mutes Packet Racket
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Track Brick Proposal only at this time PIC based TNC GPS support KISS support Auto configuration from tracker to
APRS station
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µWX
Self Contained WX station and TNC Just add your radio Temperature, Baro, Humidity Dallas One-Wire Support http://www.qsl.net/k0rx/uWx/ Cost is around $50
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Dallas One-Wire WX station
Reads Wind Speed / Direction / Temperature
Perfect companion for µWX $79 http://www.aag.com.mx/weather.html
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What can APRS do?
Track Things and People Messaging Weather
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Tracking
Cars, Trucks, Firetrucks, Emergency Vehicles
Users can create and move objects such as hurricanes and funnel clouds.
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Messaging
Short, one-line messages Repeating public announcements EMAIL
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Weather
Trending Weather Data Weather Alerts from NWS Superimposed RADAR
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PCsat
Covers 100% of earth 4 times/day Uplink on 145.825 / 435.2509600
Downlink 145.825 / 144.39 World Wide Email World Wide Emergency Beacon World Wide Paging On Board GPS
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PCsat Radio Setup
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PCsat Eclipse
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February 2002
Tim
e
PCsat Passes Over South Carolina
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Echo Station Repeater Win9x software based voice repeater Autopatch with voice modem Speech Synthesizer can read text files
such as weather reports and APRS messages
http://www.synergenics.com
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Internet Resources
APRS web page
http://wes.johnston.net/aprs
APRS web server
http://wesjohnston.homeip.net:14439