Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4MJ callsign genealogy
Currently held by Rohr, 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 KX4MJ's current licensee, walking backwards.
- Rohr, Robert MGAgranted 2017-10-30cancelled 2018-07-21
Successor callsigns
Callsigns held now by people who previously held KX4MJ.
No current licensee on record previously held this callsign.