Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KE4KEY callsign genealogy
Currently held by Gros, Leonard J
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 KE4KEY's current licensee, walking backwards.
- GROS SR, EDUARDO JFLgranted 2014-06-16cancelled 2016-05-06
Successor callsigns
Callsigns held now by people who previously held KE4KEY.
- Gros, Leonard JFLgranted 2023-12-13
All historical holders
Every license row we've seen with the callsign KE4KEY, oldest first.
- Gros, Leonard J FL2014-01-14 → cancelled 2014-02-19
- GROS SR, EDUARDO J FL2016-05-06 active