Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW7ZY callsign genealogy
Currently held by Castro, Juan 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 KW7ZY's current licensee, walking backwards.
- Castro, Juan PAZgranted 2020-05-27cancelled 2021-03-16
Successor callsigns
Callsigns held now by people who previously held KW7ZY.
No current licensee on record previously held this callsign.