Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD5C callsign genealogy
Currently held by MULLINS, MARK
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 WD5C's current licensee, walking backwards.
- PORTERFIELD, LARRY FARgranted 1994-02-15cancelled 2001-03-02
Successor callsigns
Callsigns held now by people who previously held WD5C.
- MULLINS, MARK JAMESWYgranted 2019-02-02
All historical holders
Every license row we've seen with the callsign WD5C, oldest first.
- PORTERFIELD, LARRY F AR2020-12-03 active
- MULLINS, MARK— → cancelled 1999-02-10