Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DRH callsign genealogy
Currently held by Heiney, Dave 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 K4DRH's current licensee, walking backwards.
- Heiney, David RFLgranted 2015-02-25cancelled 2015-06-16
Successor callsigns
Callsigns held now by people who previously held K4DRH.
No current licensee on record previously held this callsign.