Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4MDR callsign genealogy
Currently held by Robinette, Michael D
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 KB4MDR's current licensee, walking backwards.
- Robinette, Michael DINgranted 2004-09-28cancelled 2004-11-16
Successor callsigns
Callsigns held now by people who previously held KB4MDR.
No current licensee on record previously held this callsign.