Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8ZE callsign genealogy
Currently held by Switzer, Michael L
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 K8ZE's current licensee, walking backwards.
- Hollis, John WNHgranted 2018-01-19cancelled 2026-03-24
Successor callsigns
Callsigns held now by people who previously held K8ZE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8ZE, oldest first.
- Switzer, Michael L MI2013-08-27 → cancelled 2026-03-06
- Hollis, John W NH2026-03-24 active