Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NL4MM callsign genealogy
Currently held by McDowell, Nolan 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 NL4MM's current licensee, walking backwards.
- McDowell, Nolan HAKgranted 2014-04-15cancelled 2019-10-08
Successor callsigns
Callsigns held now by people who previously held NL4MM.
No current licensee on record previously held this callsign.