Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0JCM callsign genealogy
Currently held by MAYER, JOHN H
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 N0JCM's current licensee, walking backwards.
- Moore III, John CKSgranted 2022-03-16cancelled 2023-02-18
Successor callsigns
Callsigns held now by people who previously held N0JCM.
- MAYER, JOHN HIAgranted 2026-08-01
All historical holders
Every license row we've seen with the callsign N0JCM, oldest first.
- MAYER, JOHN H IA2007-11-30 → cancelled 2016-08-09
- Moore III, John C KS2023-02-18 active