Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4ZVL callsign genealogy
Currently held by KLINGEBIEL, GARY 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 KC4ZVL's current licensee, walking backwards.
- Klingebiel, CynthiaFLgranted 2022-08-23cancelled 2022-09-13
Successor callsigns
Callsigns held now by people who previously held KC4ZVL.
- KLINGEBIEL, GARY LFLgranted 2022-08-04
All historical holders
Every license row we've seen with the callsign KC4ZVL, oldest first.
- KLINGEBIEL, GARY L FL2011-01-31 → cancelled 2012-10-02
- Klingebiel, Cynthia FL2022-09-13 active