Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0SM callsign genealogy
Currently held by YOUNT, ROLAND G
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 KF0SM's current licensee, walking backwards.
- Velayutham, Sivasakthi MuruganIAgranted 2023-11-14cancelled 2024-11-22
Successor callsigns
Callsigns held now by people who previously held KF0SM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF0SM, oldest first.
- YOUNT, ROLAND G CO2001-04-05 → cancelled 2013-07-03
- Velayutham, Sivasakthi Murugan CA2024-11-22 active