Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4MAP callsign genealogy
Currently held by TODD, WILLIAM C
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 WD4MAP's current licensee, walking backwards.
- PEREDA, MICHAEL AFLgranted 2022-03-30cancelled 2022-04-19
Successor callsigns
Callsigns held now by people who previously held WD4MAP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4MAP, oldest first.
- TODD, WILLIAM C SC1994-08-17 → cancelled 2006-08-18
- PEREDA, MICHAEL A FL2022-04-19 active