Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0RYG callsign genealogy
Currently held by Crowley, Theodore D
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 KF0RYG's current licensee, walking backwards.
- Crowley, Theodore DMNgranted 2023-08-17cancelled 2024-10-17
Successor callsigns
Callsigns held now by people who previously held KF0RYG.
- Crowley, Theodore DMNgranted 2024-11-05