Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4XK callsign genealogy
Currently held by Lounsbury, Mark R
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 KY4XK's current licensee, walking backwards.
- Lounsbury, Mark RSCgranted 2023-02-23cancelled 2023-04-27
Successor callsigns
Callsigns held now by people who previously held KY4XK.
No current licensee on record previously held this callsign.