Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4CQ callsign genealogy
Currently held by Hearn, Randall C
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 KB4CQ's current licensee, walking backwards.
- Hearn, Randall CALgranted 2013-01-04cancelled 2016-07-06
Successor callsigns
Callsigns held now by people who previously held KB4CQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4CQ, oldest first.
- HARRIS, TIMOTHY E FL2004-03-30 → cancelled 2016-03-31
- Hearn, Randall C AL2026-05-28 active