Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MBM callsign genealogy
Currently held by Merchant, Mason B
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 W1MBM's current licensee, walking backwards.
- Merchant, Mason BRIgranted 2004-04-12cancelled 2004-11-05
Successor callsigns
Callsigns held now by people who previously held W1MBM.
No current licensee on record previously held this callsign.