Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9YOF callsign genealogy
Currently held by Caldwell Jr, Herbert W
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 KB9YOF's current licensee, walking backwards.
- CALDWELL JR, HERBERT WINgranted 1995-06-20cancelled 2000-12-16
Successor callsigns
Callsigns held now by people who previously held KB9YOF.
No current licensee on record previously held this callsign.