Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8ZJT callsign genealogy
Currently held by TUMBUSCH, ZACH 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 W8ZJT's current licensee, walking backwards.
- TUMBUSCH, ZACH JOHgranted 2011-08-12cancelled 2012-01-04
Successor callsigns
Callsigns held now by people who previously held W8ZJT.
No current licensee on record previously held this callsign.