Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DRC callsign genealogy
Currently held by Hruby, James F
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 K4DRC's current licensee, walking backwards.
- Hruby, James FAKgranted 2009-02-05cancelled 2009-03-14
Successor callsigns
Callsigns held now by people who previously held K4DRC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DRC, oldest first.
- HRUBY JR, FRANK J FL2005-01-13 → cancelled 2008-11-23
- Hruby, James F AK2019-03-21 active