M7XSJ
Tools · APRS-IS

APRS-IS passcode generator

Every APRS-IS login (your iGate firmware, APRSdroid, Xastir, YAAC…) asks for a numeric passcode derived from your callsign. It's not a secret — it's a simple checksum every client computes the same way. Type your callsign, get your passcode.

🔑Generate your passcode

Passcode: —
How it works: the passcode is a 15-bit XOR checksum of your base callsign (any -SSID is ignored, so M7XSJ-10 and M7XSJ give the same code). It runs entirely in your browser — nothing is sent anywhere. Use it only with your own licensed callsign: it's how APRS-IS asserts you're a licensed amateur, and RX-only setups can use passcode -1 instead.

Running a LoRa-APRS iGate?

Point its syslog at this network and get live coverage maps, RF analytics, outage alerts and email digests for your gate — free, and your lora-aprs.live feed keeps working.

📡 How the network works