Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1JWM callsign genealogy
Currently held by MARCUS III, JOHN W
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 W1JWM's current licensee, walking backwards.
- MARCUS III, JOHN WMAgranted 2017-04-20cancelled 2017-07-18
Successor callsigns
Callsigns held now by people who previously held W1JWM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1JWM, oldest first.
- FULLER, HOWARD J MA1997-10-14 → cancelled 2009-10-15
- MARCUS III, JOHN W MA2017-07-18 active