Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK7JAR callsign genealogy
Currently held by Rau, John 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 KK7JAR's current licensee, walking backwards.
- Rau, John AAZgranted 2026-04-02cancelled 2026-04-21
Successor callsigns
Callsigns held now by people who previously held KK7JAR.
- Ricker, KatORgranted 2022-11-26
All historical holders
Every license row we've seen with the callsign KK7JAR, oldest first.
- Ricker, Kat OR2022-11-08 → cancelled 2022-11-26
- Rau, John A AZ2026-04-21 active