Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7RCK callsign genealogy
Currently held by Brock Jr, James 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 KB7RCK's current licensee, walking backwards.
- Brock Jr, James RWAgranted 2017-10-03cancelled 2017-10-24
Successor callsigns
Callsigns held now by people who previously held KB7RCK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7RCK, oldest first.
- SPENCE, LORNE E MT2003-04-22 → cancelled 2015-07-21
- Brock Jr, James R WA2017-10-24 active