Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0TP callsign genealogy
Currently held by Popp, Thomas D
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 KA0TP's current licensee, walking backwards.
- Popp, Thomas DWAgranted 2019-03-08cancelled 2019-03-29
Successor callsigns
Callsigns held now by people who previously held KA0TP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0TP, oldest first.
- Popp, Thomas D OR2000-09-06 → cancelled 2017-09-26
- Popp, Thomas D WA2019-03-29 active