Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA0RJN callsign genealogy
Currently held by Mohler, John M
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 KA0RJN's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KA0RJN.
No current licensee on record previously held this callsign.