Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4LEO callsign genealogy
Currently held by Newby, Mark A
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 KX4LEO's current licensee, walking backwards.
- Newby, Mark AFLgranted 2018-06-27cancelled 2018-07-20
Successor callsigns
Callsigns held now by people who previously held KX4LEO.
No current licensee on record previously held this callsign.