Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9BOP callsign genealogy
Currently held by McAllister, Joel I
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 KC9BOP's current licensee, walking backwards.
- McAllister, Joel IWIgranted 2025-06-14cancelled 2025-07-05
Successor callsigns
Callsigns held now by people who previously held KC9BOP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC9BOP, oldest first.
- McAllister, Joel I WI2012-04-23 → cancelled 2024-04-18
- McAllister, Joel I WI2025-07-05 active