Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4PHI callsign genealogy
Currently held by BURKHOLDER, RYAN A
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 W4PHI's current licensee, walking backwards.
- BURKHOLDER, RYAN AVAgranted 2015-11-12cancelled 2015-12-04
Successor callsigns
Callsigns held now by people who previously held W4PHI.
- BURKHOLDER, RYAN AVAgranted 2020-05-29cancelled 2023-04-01
All historical holders
Every license row we've seen with the callsign W4PHI, oldest first.
- MC CAULEY, CLIFTON H FL1987-12-08 → cancelled 1999-12-09
- BURKHOLDER, RYAN A VA2015-12-04 → cancelled 2020-05-29