Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7YZO callsign genealogy
Currently held by Kopp, Harold P
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 K7YZO's current licensee, walking backwards.
- Kopp, Harold PAZgranted 2003-08-02cancelled 2008-11-14
Successor callsigns
Callsigns held now by people who previously held K7YZO.
No current licensee on record previously held this callsign.