Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MJD callsign genealogy
Currently held by BLACKWELL, GARY L
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 W4MJD's current licensee, walking backwards.
- BLACKWELL, GARY LNCgranted 2002-06-03cancelled 2003-01-17
Successor callsigns
Callsigns held now by people who previously held W4MJD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MJD, oldest first.
- BLACKWELL, WARREN G NC1997-01-07 → cancelled 2001-09-11
- BLACKWELL, GARY L NC2023-02-15 active