Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4CJ callsign genealogy
Currently held by VAN ATTA, HARRY R
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 KK4CJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KK4CJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4CJ, oldest first.
- VAN ATTA, HARRY R FL1997-07-22 → cancelled 2009-07-23
- Girard, David F MI2020-02-15 active