Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ3SRC callsign genealogy
Currently held by CASTILLE-ZIPP, SUNNY R
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 KZ3SRC's current licensee, walking backwards.
- Castille-Zipp, Sunny RTXgranted 2007-05-08cancelled 2007-07-21
Successor callsigns
Callsigns held now by people who previously held KZ3SRC.
- CASTILLE-ZIPP, SUNNY RTXgranted 2018-09-11