In amateur radio, the “QTH” Q-code means “What is your position?” when used as a question or “My position is…” when used as a statement. The Automatic Packet Reporting System® is a common avenue that amateur radio operators communicate their positions, among other useful information.
QTH.app is an APRS® client application exclusively for the macOS platform. It connects to the APRS network via radio or Internet to help operators receive, transmit, and visualize information being shared over APRS.
- Easy map navigation
- Supports connecting via:
- Audio Modem – Use the internal Mac sound card
- Serial KISS TNC
- Special support for Mobilinkd Bluetooth TNCs
- AGWPE – exists, but buggy
- GPS Connections
- Bluetooth GPS
- Uses macOS Location Services in the absence of a GPS
- Support for drawing APRS shapes directly on the map
- Mapping APRS position reports, objects, etc
- APRS symbols
- Graphical display of speed and direction
- Tactical callsigns
- Station paths, including dead reckoning
- Telemetry graphs
- APRS timeline
- Go back in time and see where things were at a certain time
- Special weather station display, including wind barbs and temperature colors
- Location beaconing
- Instant Messaging
- Store favorite ham radio contacts in the Apple Contacts
- Integrated with macOS notification center
- Custom matching rules
- Logs packets to database
- Comprehensive help system
- Offline maps
- Map grids; MGRS, Civil Air Patrol, Maidenhead
- Other types of maps, topographical, OpenStreetMap, OpenCycleMaps, etc
- APRS Queries
- Multilingual support – Supports English now. French later. Other languages as I have help.
- Simple digipeater support
- Spoken voice alerts
- Rig control for tuning to frequency objects
- Local data sharing with other QTH instances on LAN – Intended for operations rooms
- Search and Rescue features
- Applescript (Automator) support
What It Won’t Do
- Collect data from weather stations. Check out WeeWX for this.
- Act as a dedicated IGate or Digipeater. Better solutions exist for this.
Browse the Help Book Online
At the moment, QTH is in beta testing, and is only available to volunteers in the beta test program. Please email me at firstname.lastname@example.org if you are interested in helping out as a beta tester.
Once released, I will be going with a “freemium” pricing model. QTH will be free to receive APRS traffic. The transmit functions will require a software license. This serves a couple purposes: It allows verification that the person transmitting holds a valid amateur radio callsign and it puts a few dollars in my pocket. My current thinking is that the price will be somewhere around the $30 mark.