Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK9ZZK callsign genealogy
Currently held by HASSELBACH SR, TIM A
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 KK9ZZK's current licensee, walking backwards.
- HASSELBACH SR, TIM ATXgranted 2024-09-13cancelled 2024-10-08
Successor callsigns
Callsigns held now by people who previously held KK9ZZK.
- HASSELBACH SR, TIM ATXgranted 2025-01-03