Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ3ZZZ callsign genealogy
Currently held by MAXWELL, DEREK 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 KZ3ZZZ's current licensee, walking backwards.
- Donahue, NathanielMDgranted 2016-12-28cancelled 2017-06-27
Successor callsigns
Callsigns held now by people who previously held KZ3ZZZ.
- MAXWELL, DEREK WSDgranted 2015-01-06
All historical holders
Every license row we've seen with the callsign KZ3ZZZ, oldest first.
- MAXWELL, DEREK W PA1999-09-16 → cancelled 2004-11-16
- Donahue, Nathaniel MD2017-06-27 active