Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5YK callsign genealogy
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 KB5YK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KB5YK.
- WILLIAMS SR, ROBERT FLAgranted 1998-07-15cancelled 2005-07-06
All historical holders
Every license row we've seen with the callsign KB5YK, oldest first.
- WILLIAMS SR, ROBERT F LA2015-05-27 active
- —— → cancelled 1998-07-15