Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1PWM callsign genealogy
Currently held by Meier, Michael J
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 N1PWM's current licensee, walking backwards.
- Meier, Michael JMAgranted 2013-10-24cancelled 2022-03-08
Successor callsigns
Callsigns held now by people who previously held N1PWM.
- SEMPLE, ROBERT WMEgranted 2020-06-06
All historical holders
Every license row we've seen with the callsign N1PWM, oldest first.
- SEMPLE, ROBERT W ME1999-01-25 → cancelled 2000-06-13
- Meier, Michael J MA2022-03-08 active