K9APR Radio Tools

APRS Station Lookup

Find APRS station locations, tracks, raw position reports, messages, and nearby stations. The original K9APR lookup functions are preserved in a responsive modern interface.

Callsign Search

QRZ Callsign Lookup

Find Stations

Track, Location & APRS Data

These tools preserve the FindU functions from your existing APRS page while replacing the old fixed-width tables with cards that work on phones and modern browsers.

Station Location

Find the current/recent location for a callsign. Wildcards are permitted, such as K9APR*.

Station Track

View a station's APRS track. Use a specific CALL-SSID rather than a wildcard.

Raw Position Data

View raw APRS position information for a specific CALL-SSID.

APRS Messages

View messages sent from or to a specific APRS CALL-SSID.

Nearby APRS

Find Stations in the Vicinity

Search for nearby APRS activity by callsign, U.S. ZIP code, or coordinates.

Near a Callsign

Use a specific CALL-SSID to find stations operating nearby.

Near a ZIP Code

Find APRS stations around a five-digit U.S. ZIP code.

Near Latitude & Longitude

Search for APRS stations around a specific coordinate.

APRS is a registered trademark associated with Bob Bruninga, WB4APR (SK). FindU.com is associated with Steve Dimse, K4HG. External searches open in a new tab.