Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5TZF callsign genealogy
Currently held by Bertholf, Devon C
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 W5TZF's current licensee, walking backwards.
- Bertholf, Devon CTXgranted 2014-12-09cancelled 2015-10-23
Successor callsigns
Callsigns held now by people who previously held W5TZF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5TZF, oldest first.
- BERTHOLF JR, RUSSELL W TX1999-07-12 → cancelled 2010-07-07
- Bertholf, Devon C TX2025-09-12 active