Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3RMZ callsign genealogy
Currently held by SEMONAVICK, WILLIAM
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 K3RMZ's current licensee, walking backwards.
- ONeill, Phalen JPAgranted 2019-09-17cancelled 2019-10-11
Successor callsigns
Callsigns held now by people who previously held K3RMZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3RMZ, oldest first.
- SEMONAVICK, WILLIAM DE1994-07-08 → cancelled 2006-07-11
- O'Neill, Phalen J PA2019-10-11 active