Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1CZB callsign genealogy
Currently held by Tierney, Kevin J
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 K1CZB's current licensee, walking backwards.
- Tierney, Kevin JVAgranted 2010-05-13cancelled 2010-06-02
Successor callsigns
Callsigns held now by people who previously held K1CZB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1CZB, oldest first.
- TAVERNIER SR, TANIS J MA1988-02-23 → cancelled 2000-02-24
- Tierney, Kevin J FL2020-04-04 active