Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5ZSA callsign genealogy
Currently held by SIERADZKI, BERNARD 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 KB5ZSA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KB5ZSA.
No current licensee on record previously held this callsign.