Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4US callsign genealogy
Currently held by MCDERMOTT, SKYLAR 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 KZ4US's current licensee, walking backwards.
- MCDERMOTT, SKYLAR ATNgranted 2016-11-21cancelled 2025-07-10
Successor callsigns
Callsigns held now by people who previously held KZ4US.
No current licensee on record previously held this callsign.