Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5ZEF callsign genealogy
Currently held by Spearman, John P
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 W5ZEF's current licensee, walking backwards.
- SPEARMAN, JOHN PTXgranted 2010-02-09cancelled 2010-03-09
Successor callsigns
Callsigns held now by people who previously held W5ZEF.
No current licensee on record previously held this callsign.