Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8KLL callsign genealogy
Currently held by GRUENBERG, ERNEST A
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 W8KLL's current licensee, walking backwards.
- GRUENBERG, CHRISTOPHER AMIgranted 2025-08-07cancelled 2025-09-16
Successor callsigns
Callsigns held now by people who previously held W8KLL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8KLL, oldest first.
- GRUENBERG, ERNEST A FL2018-08-01 → cancelled 2025-03-15
- GRUENBERG, CHRISTOPHER A MI2025-09-16 active