Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3ZEF callsign genealogy
Currently held by Melpolder, Donald J
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 W3ZEF's current licensee, walking backwards.
- Melpolder, Donald JPAgranted 2011-04-21cancelled 2011-05-14
Successor callsigns
Callsigns held now by people who previously held W3ZEF.
No current licensee on record previously held this callsign.