Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK7YD callsign genealogy
Currently held by CASTLE, THOMAS F
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 KK7YD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KK7YD.
No current licensee on record previously held this callsign.