Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1MTB callsign genealogy
Currently held by MacMillan, Richard 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 W1MTB's current licensee, walking backwards.
- MacMillan, Richard LMEgranted 2010-05-04cancelled 2010-06-02
Successor callsigns
Callsigns held now by people who previously held W1MTB.
No current licensee on record previously held this callsign.