Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZAH callsign genealogy
Currently held by HAMM, ZACHARY A
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 W4ZAH's current licensee, walking backwards.
- HAMM, ZACHARY ANCgranted 2006-11-16cancelled 2006-12-12
Successor callsigns
Callsigns held now by people who previously held W4ZAH.
No current licensee on record previously held this callsign.