Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4PBR callsign genealogy
Currently held by Caldwell Jr., Eric 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 KM4PBR's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4PBR.
- Caldwell Jr., ERIC JFLgranted 2017-11-18