Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FZ callsign genealogy
Currently held by WEINIG, ROBERT F
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 K4FZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4FZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4FZ, oldest first.
- WEINIG, ROBERT F FL1988-03-22 → cancelled 2000-03-23
- SMOLLON, JAMES R TN2020-01-18 active