APRS Resources and Links
A curated collection of APRS resources, tools, and references.
📡 Official APRS Resources
Primary Sites
- APRS.org - Bob Bruninga's official APRS website
- APRS.fi - Global APRS tracking and mapping
- APRS-IS - Internet service documentation
- TAPR - Tucson Amateur Packet Radio
Documentation
- APRS101.PDF - Official protocol reference
- APRS Spec v1.1 - Specification addendum
- APRS Spec v1.2 - Latest updates
🛠️ Software Tools
Desktop Applications
Windows
- APRSISCE/32 - Full-featured Windows client
- UI-View32 - Classic APRS software (legacy)
- YAAC - Yet Another APRS Client (Java)
- Xastir - Cross-platform (via Cygwin)
macOS
Linux
Mobile Applications
Android
iOS
- PocketPacket - Premium APRS client ($)
- APRS.fi - Web app optimized for iOS
- APRStt - APRS via DTMF tones
Web-Based Tools
- APRS.fi - Real-time tracking and mapping
- APRSdirect - Live APRS map
- findu.com - Legacy tracking site
- APRS Message - Send APRS messages online
- aprs.to - SMS to APRS gateway
🔧 Hardware and TNCs
Software TNCs
-
Dire Wolf - Excellent software TNC
- Better performance than hardware TNCs
- Supports Raspberry Pi
- Free and open-source
-
UZ7HO SoundModem - Windows sound card TNC
Hardware TNCs
Modern TNCs
-
Mobilinkd TNC3 - Bluetooth TNC
- Wireless connection to smartphone
- ~$80-100
-
TNC-X - Kit-based TNC
- DIY assembly
- ~$60 kit
-
Argent Data OT3m - Micro tracker
- Tiny form factor
- GPS integrated
Classic TNCs
- Kantronics KPC-3+ - Industry standard
- MFJ-1270 - Popular multi-mode TNC
- Timewave PK-232 - Multi-mode controller
📻 APRS-Capable Radios
Mobile Radios
- Kenwood TM-D710GA - Dual-band with GPS
- Yaesu FTM-400XDR - Touch screen APRS
- Kenwood TM-D74A - Tri-band D-STAR/APRS
Handheld Radios
- Yaesu FT5DR - Dual-band APRS/C4FM
- Kenwood TH-D74A - Tri-band handheld
- Anytone D878UV - DMR + APRS
Dedicated Trackers
- Byonics TinyTrak4 - GPS tracker
- Argent Data Tracker2 - Compact tracker
- LightAPRS - Open-source tracker
🌍 Online Services
Tracking and Mapping
- APRS.fi - Primary global tracker
- APRSdirect - Alternative mapping
- OpenAPRS - Open APRS network
- findu.com - Historical tracking
Weather Networks
- CWOP - Citizen Weather Observer Program
- Weather Underground - PWS network
- APRS Weather - Weather specifications
Message Services
- APRS.fi Messages - Web messaging
- Email to APRS - Email gateway
- SMS to APRS - SMS gateway
- SMSGTE - SMS/Email gateway
📖 Learning Resources
Tutorials and Guides
- APRS for Beginners - Getting started
- APRS-IS Explained - Internet service guide
- Smart Beaconing - Intelligent beaconing
- APRS Symbols - Symbol reference
Video Tutorials
YouTube Channels
- Ham Radio Crash Course - APRS series
- K6UDA Radio - APRS tutorials
- OH8STN - Portable APRS
- KB9VBR - APRS projects
Books
-
"APRS Tracks, Maps and Mobiles" by Stan Horzepa, WA1LOU
- ISBN: 978-0872599116
-
"The APRS Handbook" by Mark Sproul, KB2ICI
- Comprehensive APRS guide
-
"ARRL Handbook" - Annual publication
- APRS chapter included
Online Courses
- HamStudy.org - License exam prep
- KB6NU's Study Guides - Free study materials
- ARRL Learning Center - Courses and webinars
💬 Communities and Forums
Mailing Lists
- APRSSIG - Main APRS discussion
- TAPR APRS - Official list
- Linux APRS - Linux-specific
Social Media
Facebook Groups
- APRS (Automatic Packet Reporting System) - 15k+ members
- APRS Users Group - Active discussions
- Raspberry Pi APRS - Pi-specific projects
- APRS Weather Stations - Weather enthusiasts
- /r/amateurradio - General ham radio
- /r/APRS - APRS-specific
- /r/hamdevs - Development discussions
Forums
- QRZ Forums - APRS - Active APRS forum
- eHam.net - Reviews and articles
- Reddit /r/APRS - Community discussions
🔬 Development Resources
Source Code Repositories
- Dire Wolf - Software TNC
- APRSdroid - Android client
- Xastir - Cross-platform client
- YAAC - Java APRS client
- LightAPRS - Open tracker
Libraries and APIs
- aprslib (Python) - Python APRS library
- aprs-parser-js - JavaScript parser
- APRS.fi API - Official API documentation
- aprx - IGate/Digipeater software
Protocol Specifications
- AX.25 Protocol - Link layer spec
- APRS Protocol Reference - Official spec
- KISS Protocol - TNC interface
🛰️ Special APRS Applications
Space Communications
-
ISS APRS - International Space Station
- Frequency: 145.825 MHz
- Digipeater: ARISS
-
APRS Satellites - Amateur satellites with APRS
-
ISS Fan Club - ISS tracking and passes
Marine APRS
- Marine APRS - Maritime applications
- Shipfinder - AIS integration
- MarineTraffic - Global ship tracking
Aviation APRS
- OGN - Open Glider Network - Glider tracking
- FlightRadar24 - Aircraft tracking
- APRS for Aviation - Aviation resources
🏁 Events and Nets
Regular Events
- ARRL Field Day - Annual emergency communications exercise
- Hamvention - Largest ham radio convention (Dayton, OH)
- Maker Faire - APRS demonstrations worldwide
APRS Nets
Check local repeater directories for APRS nets in your area:
- Weekly technical discussions
- Emergency preparedness drills
- Regional coordination
📊 Statistics and Analysis
- APRS-IS Stats - Real-time network statistics
- APRS-IS Status - Server status
- APRS Coverage - IGate and digipeater coverage
🆘 Emergency Communications
ARES/RACES Resources
- ARRL ARES - Amateur Radio Emergency Service
- RACES - Radio Amateur Civil Emergency Service
- EmComm - Emergency communications
Emergency Networks
- Hurricane Watch Net - Hurricane tracking
- Salvation Army SATERN - Disaster response
- SkyWarn - Severe weather reporting
🔐 Licensing Resources
USA
- FCC ULS - License search and applications
- HamStudy.org - Free online practice exams
- ARRL Exam Finder - Find exam sessions
International
- IARU - International Amateur Radio Union
- Country-specific regulations - Member societies by country
🛍️ Equipment Vendors
Major Retailers
- Ham Radio Outlet - USA nationwide
- DX Engineering - Equipment and antennas
- GigaParts - Ham radio specialists
- Universal Radio - Wide selection
Online Marketplaces
- QRZ Swap - Ham radio classifieds
- eBay Ham Radio - New and used equipment
- r/hamfest - Reddit marketplace
International Vendors
- Radioworld - UK
- Waters & Stanton - UK
- Icom Japan - Japan
- Yaesu - Japan/USA
📡 Repeater and Frequency Resources
- RepeaterBook - Repeater directory
- ARRL Repeater Directory - Official listing
- RFinder - Mobile repeater app
🏆 Awards and Achievements
- APRS Awards - APRS-specific awards
- WAS (Worked All States) - ARRL award
- DXCC - DX Century Club
🤝 Contributing to This List
Have a resource to add? Feel free to:
- Open an issue on GitHub
- Submit a pull request
- Contact the maintainers
Last Updated: December 2025
Maintained by: APRS Community Contributors