Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CAZ callsign genealogy
Currently held by Casburn, Mark A
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 K4CAZ's current licensee, walking backwards.
- Casburn, Mark AFLgranted 2018-07-27cancelled 2018-08-17
Successor callsigns
Callsigns held now by people who previously held K4CAZ.
- Cazzalino, JOE RFLgranted 2025-03-19
All historical holders
Every license row we've seen with the callsign K4CAZ, oldest first.
- Cazzalino, JOE R FL2015-04-03 → cancelled 2015-04-24
- Casburn, Mark A FL2018-08-17 active