Documentation

Install APRS Connect on Android or iPhone, set your callsign and SSID, grant the right permissions, and hear your first APRS traffic over the internet or a radio.

Install APRS Connect on a Windows 10 or Windows 11 computer. What the Windows app connects to, how it keeps running in the tray, how it updates itself, where its data is kept, how Pro works there, and what it does not have.

Run APRS Connect in a web browser at app.aprsconnect.com with nothing to install, on a computer, tablet or phone. Which browsers work, connecting a USB or Bluetooth LE TNC from Chrome or Edge, how Pro and your messages arrive with your account, where your data is kept, and what a browser cannot do.

What APRS Connect does without needing APRS Connect Pro, what Pro adds, what it costs, and what happens when a trial or subscription ends.

Connect APRS Connect to APRS-IS over the internet. Regional Tier 2 servers, the derived passcode, receive filters, and true receive-only mode.

Turn on the station beacon in APRS Connect. GPS or fixed position, symbol, smart beaconing, routing, and how to confirm you are on the map.

How APRS Connect talks to real radios. BLE KISS TNCs, LoRa APRS trackers and iGates, an AFSK audio modem, KISS over TCP and APRS-IS on Android and iPhone, and Bluetooth Classic and USB KISS TNCs on Android, in any combination.

Connect APRS Connect to a Bluetooth Classic KISS TNC on Android. Kenwood TH-D74 and TH-D75, Mobilinkd TNC3, pairing, KISS mode, and troubleshooting.

Connect APRS Connect to a Bluetooth Low Energy TNC or LoRa APRS tracker on Android or iPhone, or in the Chrome or Edge browser build. Mobilinkd TNC4 in LE mode, B.B. Link, Tidradio TD-H9, CA2RXU LoRa firmware, scanning, and why a BLE TNC never appears in the paired list.

How to plug a KISS TNC into your Android phone's USB-C port with an OTG cable, including the permission prompt, baud rate, and the DTR setting some radios need.

Use any radio for APRS with no TNC at all. The app's built-in AFSK 1200 software modem encodes and decodes packet audio through a cable to the radio.

Connect APRS Connect to Direwolf, any network KISS TNC, or a LoRa APRS iGate's text feed over TCP. This page covers host and port setup, Direwolf's default port 8001, receive-only channels, and when a network TNC is the right choice.

Let another APRS program use APRS Connect as its TNC. Turn on the KISS server in the Windows, Linux or Mac app, point the other program at its port, and choose which channels it hears and sends on.

APRS messaging in APRS Connect. Conversation threads per station, six delivery states, a retry schedule you set, retry when heard, templates, bulletins, and gateways to SMS, email, Winlink and WhatsApp.

Let the app receive and answer APRS messages sent to your other SSIDs, such as a digipeater or IGate on another box or a second radio. Their messages go in conversations of their own or merged into yours, with an acknowledge switch you control.

The Services tab puts 22 APRS service bots on guided screens: SMS, email and Winlink gateways, WXBOT weather forecasts, POTA/SOTA spotting, WHO-IS lookup and more.

ANSRVR group messaging. Browse the group directory, join a net room, check in, post, and log an #APRSThursday check-in over APRS.

Host and chase APRS OTA ops in APRS Connect. Go on the air in one tap, confirm chasers, see everyone on a map, and share how your op went.

The full APRS beaconing reference. Smart beaconing, objects, position ambiguity, Mic-E, voice frequency and PHG, and answering ?APRSP.

Be told when a station on the move is close enough to work. This page explains how the range and the frequency filter work, what counts as moving, and why some stations never trigger an alert.

The APRS Connect map. Offline tile cache, a light or dark basemap, downloadable offline regions, real APRS symbols, trails, NEXRAD weather radar, the digipeater coverage heat map, follow-me, and watching packets hop digipeaters.

How to turn your phone into an IGate, what it passes in each direction, why it only transmits for stations it has heard directly, and what it will never put on the air.

Run your phone as an APRS digipeater. What a fill-in does, why it waits before transmitting, how the rules work, and what it will never repeat.

The APRS Connect Stations tab, covering every station heard, pinned stations, device identification, weather history, WHO-IS lookups, provenance badges, and the shared view filter.

Your station's own numbers in APRS Connect, a tile each, over today, the last week, the last month or all time. Counted and kept on the phone.

Your own Maidenhead locator in APRS Connect, the distance and bearing from it to any other grid square or callsign, and a map with the grid drawn on it. The arithmetic is all calculated on the phone with no connection.

How to use the packet digipeater on the International Space Station, including where the station is, its next passes, a beacon that waits for it, pass notifications, and who has been heard through it.

Watch raw APRS packets live, decode any frame field by field, export the log as a capture file, replay captures at 1×, 10×, or 60×, and choose how long the log is kept.

Write an APRS packet by hand, see how it decodes, send it on the channels you choose, and keep it to send again or on a repeat.

Keep APRS reception and beaconing running with the screen off. The background switch, what an iPhone keeps running, battery optimization on Android, and what it costs.

How APRS Connect works with TalkBack on Android and VoiceOver on iPhone, including what is read aloud, where the actions menu replaces a long press or a drag, and what to use instead of the map.

Back up APRS Connect. Export settings, conversations, and the block list as JSON, merge or restore safely, and export station tracks as GPX or KML.

How to create an optional APRS Connect account with a password or an emailed link, turn on two-step verification, sign out, or delete it.

Frequently asked questions about APRS Connect for Android and iPhone, covering what it costs, licences, radios and TNCs, APRS-IS passcodes, delivery states, retrying a message when its station is heard again, offline use, iOS, using it on a computer in a browser, languages, how the app updates itself and what changed in an update, getting your data out, and how to reach the developer.