Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4AHJ callsign genealogy
Currently held by Johnson, Charles E
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 KM4AHJ'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 KM4AHJ.
- Johnson, Charles EVAgranted 2014-06-17cancelled 2026-06-18