Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6JRB callsign genealogy
Currently held by University Of California Amateur Radio Club (UCDARC)
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 K6JRB's current licensee, walking backwards.
- KO6OKYcancelledUniversity Of California Amateur Radio Club (UCDARC)CAgranted 2026-07-07cancelled 2026-08-01
Successor callsigns
Callsigns held now by people who previously held K6JRB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6JRB, oldest first.
- BERG, JOHN R CA2019-02-05 → cancelled 2025-11-19
- University Of California Amateur Radio Club (UCDARC) CA2026-08-01 active