Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4RP callsign genealogy
Currently held by Frock, James W
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 AI4RP's current licensee, walking backwards.
- Frock, James WFLgranted 2005-02-15cancelled 2006-09-11
Successor callsigns
Callsigns held now by people who previously held AI4RP.
No current licensee on record previously held this callsign.