Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4NMM callsign genealogy
Currently held by Mahon, Nicholas
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 K4NMM's current licensee, walking backwards.
- Mahon, NicholasFLgranted 2021-09-16cancelled 2021-10-08
Successor callsigns
Callsigns held now by people who previously held K4NMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4NMM, oldest first.
- WEEKS, THELMA M SC2004-06-29 → cancelled 2016-09-16
- Mahon, Nicholas FL2021-10-08 active