Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1JMC callsign genealogy
Currently held by Charney, Joshua M
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 N1JMC's current licensee, walking backwards.
- Clark, Joseph MMDgranted 2021-03-01cancelled 2021-03-19
Successor callsigns
Callsigns held now by people who previously held N1JMC.
- Butterfield, Glenn MRIgranted 2010-02-17cancelled 2016-06-18
All historical holders
Every license row we've seen with the callsign N1JMC, oldest first.
- BUTTERFIELD, GLENN M RI1994-09-22 → cancelled 2000-03-24
- Charney, Joshua M MI2006-05-02 → cancelled 2018-05-03
- Clark, Joseph M MD2021-03-19 active