Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4XR callsign genealogy
Currently held by Feehrer, Robert M
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 KX4XR's current licensee, walking backwards.
- Feehrer, Robert MFLgranted 2019-10-15cancelled 2020-03-05
Successor callsigns
Callsigns held now by people who previously held KX4XR.
No current licensee on record previously held this callsign.