Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TPZ callsign genealogy
Currently held by Zajonc Jr, Timothy 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 W4TPZ's current licensee, walking backwards.
- Zajonc Jr, Timothy PTNgranted 2014-06-11cancelled 2020-09-09
Successor callsigns
Callsigns held now by people who previously held W4TPZ.
No current licensee on record previously held this callsign.