Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4CP callsign genealogy
Currently held by POPE, CHRISTOPHER M
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 AI4CP's current licensee, walking backwards.
- POPE, CHRISTOPHER MNCgranted 2016-10-25cancelled 2018-04-17
Successor callsigns
Callsigns held now by people who previously held AI4CP.
- Williston, Frederick FSCgranted 2023-10-24
All historical holders
Every license row we've seen with the callsign AI4CP, oldest first.
- Williston, Frederick F SC1996-04-24 → cancelled 2003-12-05
- POPE, CHRISTOPHER M NC2018-04-17 active