Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4YOB callsign genealogy
Currently held by FRITSCH, JOHN R
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 N4YOB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4YOB.
No current licensee on record previously held this callsign.