rcpacketmachine

Packets

Live KY4ZO positions from APRS internet service.

Rob is a ham operator with his Amateur Extra radio license, callsign KY4ZO. APRS (Automatic Packet Reporting System) is a digital radio data network used to share position, telemetry, weather, and short status packets. My little radio stations with GPS transmit small bursts of data that are relayed by digipeaters and iGates, then aggregated by services like APRS-IS so nearby and internet users can view live activity on a map.

Best experienced on desktop

Live Map

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Showing 0 map points for past 1 day.
Data from APRS.fi API.

Rob's Radios

CallsignSymbolLatitudeLongitudeAltitudeSpeedCourseLast SeenLinks
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Architecture Diagram

What's going on under the hood?

Radio delivery laneWeb/API lane1) KY4ZO radio sends position packetGPS-equipped station transmits APRS packet over radiofrequencies (RF).2) iGate bridges RF packet to APRS-ISInternet-connected iGate receives the radio packet,converts it to internet traffic, and uploads it toAPRS-IS.3) Packets UI (/packet)Opening the page or clicking Refresh starts the fetchflow.4) GET /api/packet/ky4zoBrowser requests the latest snapshot from the serverroute.5) Upstream call to APRS-IS APIServer queries the latest KY4ZO records using a secureupstream access token.6) API response to browserNormalized data drives map and table rendering.