Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4RTO callsign genealogy
Currently held by PFC William H Kilburn Post 26 American Legion Radio Club, Aiken SC
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 W4RTO's current licensee, walking backwards.
- KQ4CKYcancelledPFC William H Kilburn Post 26 American Legion Radio Club, Aiken SCSCgranted 2022-08-09cancelled 2022-09-02
Successor callsigns
Callsigns held now by people who previously held W4RTO.
No current licensee on record previously held this callsign.