Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7RCB callsign genealogy
Currently held by Gruol, James K
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 K7RCB's current licensee, walking backwards.
- Gruol, James KWAgranted 2017-07-21cancelled 2017-08-11
Successor callsigns
Callsigns held now by people who previously held K7RCB.
- Berg, Robert CMOgranted 2018-03-20
All historical holders
Every license row we've seen with the callsign K7RCB, oldest first.
- Berg, Robert C CA2004-06-16 → cancelled 2008-06-17
- Gruol, James K WA2017-08-11 active