Callsign Lookup With APRS

APRS users can lookup the license type and general location or address associated with an Amateur Radio Callsign by sending a that callsign to WHO-IS (or WHO-15 for “clients and IGates that do not support non-AX.25 SSIDs.” 1)

General Location

> W0ILO
< C/RED RIVER RADIO AMATEURS/ND/United States

Address

> f W0ILO
< W0ILO: RED RIVER RADIO AMATEURS/C
< W0ILO: PO BOX 3215
< W0ILO: FARGO ND United States

License Type Codes

These codes are displayed at the beginning of the general location message and at the end of the name line of the address message

CodeLicense Type
CClub
EExtra
GGeneral
TTechnician

About WHO-IS

WHO-IS is an APRS Service which may be globally accessed from RF or TCP/IP APRS clients. WHO-IS is maintained by Peter Loveall AE5PL and is a part of the APRS-IS software stack.

Other APRS Services include:


  1. “Callsign Lookup”, APRS-IS, accessed July 26 2020, http://www.aprs-is.net/WhoIs.aspx. ↩︎