APRS Presentation given by Steve Tarr to CARES on 11-10-05 : APRS Presentation given by Steve Tarr to CARES on 11-10-05 Credit for the material in this PowerPoint presentation goes to the authors Bob Bruninga WB4APR Steve Tarr KD7MRX


APRS(Automatic Packet Reporting System): APRS (Automatic Packet Reporting System) Bob Bruninga WB4APR US Naval Academy Satellite Lab A local real-time digital network where all-see-all Uses all conventional AX.25 1200 baud packet Shared simplex channel for simplicity and growth Since 1997, integrated with Internet for global view http://www.ew.usna.edu/~bruninga/aprs.html


APRSdos in 1992: APRSdos in 1992 128 mi


APRS Now (internet view): APRS Now (internet view) 40 Solar Cell Samples View with Browser (no two way or messaging) Connect via client (Same as local RF, but global) 32 mi


APRS digipeaters in 1996: APRS digipeaters in 1996 1000 USA digis (with 10,000 user stations) ???? World digis (total of 27,000 user stations)


Vehicle Tracking: Vehicle Tracking Roof top version Under seat version Kenwood Toolbox version Carrying case All-in-one-radio Google Search on APRS trackers


Personal Tracking: Personal Tracking Pocket Tracker $89 kit: Runs for 10 Hrs on 9v battery Includes low power (0.25W) TX on 144.39 144.99 Google: APRS pocket tracker


All-In-One APRS Radios: All-In-One APRS Radios Handheld Mobile (GPS needed if moving)


Integrated Radio APRS: Integrated Radio APRS Kenwood Dual Band Radio with built-in APRS Band A on APRS *&* (PL100 Voice Alert) Band B on your favorite repeater (2m or 70cm) Radio Display: Stations, Objects, Calls, Icons Course/Speed Distance/Bearing WX: wind, temp, temp, rain Stn: Power, Ant height and gain Messages, Bulletins, Announcements *Traffic, Satellites in view, Storms GPS & User Map Display TM-D700 Mobile TH-D7 HT


APRS in Utah: APRS in Utah Jfindu.aprs-is.net 27 users in S.L.C


APRS around the world: APRS around the world


APRS around the world: APRS around the world


Special Events: Special Events Stations Locations Objects Tracks Areas Weather Assets And Keyboard Messaging


APRS for Weather Tracking: APRS for Weather Tracking WX Reports Objects Movement Predictions Warnings Areas


APRS for Marathons: APRS for Marathons Assets Lead, Tail VIP’s Comms Downed runners Ambulances


Tracking Olympic Torch: Tracking Olympic Torch Anywhere in country via HF gates or These days via Internet Gateways


APRS Perfect for Balloons: APRS Perfect for Balloons Easy track and recovery Typically one every 2 weeks somewhere in the USA RF ranges nearly 400 miles


APRS for Meteor Scatter: APRS for Meteor Scatter Everyone TX’s Short 0.3s packets By quadrant for 15s Next morning see what you got


APRS Satellites: APRS Satellites Shuttle, ISS, Sunsat, PCsat PCSAT2, ANDE, RAFT, Echo? http://www.ew.usna.edu/~bruninga/astars.html


Amateur Satellite Transponders: Amateur Satellite Transponders


AMSAT info on your D7-HT: AMSAT info on your D7-HT Schedule of next 80 minutes is updated every 10 mins Object Text shows uplink freq, downlink freq & Doppler Radio shows direction and range to satellite for handheld antenna pointing Another display shows course and speed of satelite (not shown)


APRS Space Experiments: APRS Space Experiments


PCSAT2 on ISS next Spring: PCSAT2 on ISS next Spring


Direction Finding (Classic Beams): Direction Finding (Classic Beams) http://www.ew.usna.edu/~bruninga/dfing.html


DF-ing by Fade-Circle-Technique: DF-ing by Fade-Circle-Technique


OMNI-Direction finding: OMNI-Direction finding


Station Range Circles: Station Range Circles


ALOHA Circle (channel capacity): ALOHA Circle (channel capacity)


DIGIpeater Hops: DIGIpeater Hops 1 or 2 hops covers 100 users!


Highway Mile Mark Reporting: Highway Mile Mark Reporting All mobiles Know their MileMark


APRS is everywhere!: APRS is everywhere! Digipeaters are trivial to put up APRS can use ANY station as a digipeater APRS network can be come-as-you are APRS is not an end in itself. It is simply a digital channel for everyone to exchange info of every type to everyone on channel You can voyer worldwide on the Internet (or tune us in on 144.39 in USA)…