Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4JJH callsign genealogy
Currently held by Bolger III, John A
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 KN4JJH'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 KN4JJH.
- Bolger III, John ATNgranted 2021-01-08