Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA9ORL callsign genealogy
Currently held by CAHILL, JOHN F
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KA9ORL's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KA9ORL.
- CAHILL, JOHN FMEgranted 2002-12-31cancelled 2015-01-01