Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF7UN callsign genealogy
Currently held by Harbaugh Jr, John S
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 AF7UN'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 AF7UN.
- HARBAUGH JR, JOHN SWAgranted 2025-11-22