Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7RDH callsign genealogy
Currently held by BUHR, RUSSELL G
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 KC7RDH's current licensee, walking backwards.
- Heidingsfelder, Rhonda DTXgranted 2018-03-23cancelled 2018-05-25
Successor callsigns
Callsigns held now by people who previously held KC7RDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7RDH, oldest first.
- BUHR, RUSSELL G OR1996-05-29 → cancelled 2008-05-30
- Heidingsfelder, Rhonda D CO2018-05-25 active