Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4OL callsign genealogy
Currently held by Mills, Francis S
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 WD4OL's current licensee, walking backwards.
- Mills, Francis SSCgranted 2023-08-09cancelled 2023-09-26
Successor callsigns
Callsigns held now by people who previously held WD4OL.
No current licensee on record previously held this callsign.