Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK5YYZ callsign genealogy
Currently held by Hart, Jeffrey 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 KK5YYZ's current licensee, walking backwards.
- Hart, Jeffrey MTXgranted 2024-07-10cancelled 2024-08-17
Successor callsigns
Callsigns held now by people who previously held KK5YYZ.
No current licensee on record previously held this callsign.