Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4CS callsign genealogy
Currently held by Cohn, Charles E
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 KK4CS's current licensee, walking backwards.
- DOOLEY, WILLIAM SGAgranted 2016-10-27cancelled 2018-09-11
Successor callsigns
Callsigns held now by people who previously held KK4CS.
- Cohn, Charles EGAgranted 2006-05-09cancelled 2018-08-02
All historical holders
Every license row we've seen with the callsign KK4CS, oldest first.
- Cohn, Charles E GA1998-12-17 → cancelled 2001-04-05
- dooley, william s GA2018-09-11 active