Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0APO callsign genealogy
Currently held by Basa, James E
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 K0APO's current licensee, walking backwards.
- Basa, James EMNgranted 2021-02-25cancelled 2021-03-26
Successor callsigns
Callsigns held now by people who previously held K0APO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0APO, oldest first.
- GEORGE, RALPH H AZ2000-03-29 → cancelled 2012-06-20
- Basa, James E MN2021-03-26 active