Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4MMY callsign genealogy
Currently held by Clifton, Sam L
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 KS4MMY's current licensee, walking backwards.
- Clifton, Sam LMOgranted 2020-10-20cancelled 2020-11-24
Successor callsigns
Callsigns held now by people who previously held KS4MMY.
No current licensee on record previously held this callsign.