Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA6TPO callsign genealogy
Currently held by Harth, Jeff
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 WA6TPO's current licensee, walking backwards.
- Harth, JeffAZgranted 2022-08-10cancelled 2022-08-30
Successor callsigns
Callsigns held now by people who previously held WA6TPO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA6TPO, oldest first.
- HARTH, JEFF CA2006-07-25 → cancelled 2018-08-02
- Harth, Jeff AZ2022-08-30 active