Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HOP callsign genealogy
Currently held by COLBY, ROBERT W
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 K4HOP's current licensee, walking backwards.
- Hopkins, Timothy RKYgranted 2012-09-06cancelled 2019-03-12
Successor callsigns
Callsigns held now by people who previously held K4HOP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HOP, oldest first.
- COLBY, ROBERT W VA2002-01-17 → cancelled 2014-04-01
- Hopkins, Timothy R KY2019-03-12 active