Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1BP callsign genealogy
Currently held by Pienups, Inars
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 K1BP's current licensee, walking backwards.
- Karsell, William HCOgranted 2022-08-09cancelled 2022-09-27
Successor callsigns
Callsigns held now by people who previously held K1BP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1BP, oldest first.
- STARK, DONALD S TX1988-08-09 → cancelled 2000-08-10
- Pienups, Inars AZ2010-07-17 → cancelled 2022-09-02
- Karsell, William H CO2022-09-27 active