Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CMB callsign genealogy
Currently held by MOORE, CHARLES 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 N4CMB's current licensee, walking backwards.
- MOORE, CHARLES MVAgranted 2018-04-16cancelled 2018-06-05
Successor callsigns
Callsigns held now by people who previously held N4CMB.
- RICE, MARK ATXgranted 2018-01-09
All historical holders
Every license row we've seen with the callsign N4CMB, oldest first.
- RICE, MARK A TX2007-02-16 → cancelled 2008-02-09
- MOORE, CHARLES M VA2018-06-05 active