Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZDT callsign genealogy
Currently held by MUSIC, DOUGLAS M
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 W4ZDT's current licensee, walking backwards.
- MUSIC, DOUGLAS MFLgranted 2020-04-21
Successor callsigns
Callsigns held now by people who previously held W4ZDT.
- MUSIC, DOUGLAS MFLgranted 2020-04-21
All historical holders
Every license row we've seen with the callsign W4ZDT, oldest first.
- NICHOLS, KENNETH H FL2008-01-29 → cancelled 2017-08-30
- MUSIC, DOUGLAS M FL2018-09-25 → cancelled 2020-04-21