Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2CZ callsign genealogy
Currently held by Acosta, Efrem
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 W2CZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W2CZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W2CZ, oldest first.
- DE WINTER, JAN P NJ1987-11-03 → cancelled 1999-11-04
- Acosta, Efrem NJ2020-10-27 active