Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ7WTF callsign genealogy
Currently held by Lyster, Jeffrey S
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 KZ7WTF's current licensee, walking backwards.
- Lyster, Jeffrey SORgranted 2018-09-24cancelled 2018-10-13
Successor callsigns
Callsigns held now by people who previously held KZ7WTF.
No current licensee on record previously held this callsign.