uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N1MZM callsign genealogy

Currently held by COBB, WILLIAM D

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 N1MZM's current licensee, walking backwards.

  1. KB1ABY
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N1MZM.

No current licensee on record previously held this callsign.

← Back to N1MZM License history →