Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4BPI callsign genealogy
Currently held by Pierce, Robert J
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 K4BPI's current licensee, walking backwards.
- Pierce, Robert JFLgranted 2021-06-03cancelled 2021-06-22
Successor callsigns
Callsigns held now by people who previously held K4BPI.
No current licensee on record previously held this callsign.