Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF7YU callsign genealogy
Currently held by Knapp, Katherine L
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 AF7YU's current licensee, walking backwards.
- Knapp, Katherine LORgranted 2011-03-15cancelled 2016-05-13
Successor callsigns
Callsigns held now by people who previously held AF7YU.
No current licensee on record previously held this callsign.