Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4SM callsign genealogy
Currently held by MURPHY, STEVEN B
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 KC4SM's current licensee, walking backwards.
- MURPHY, STEVEN BCAgranted 2012-07-03cancelled 2020-06-30
Successor callsigns
Callsigns held now by people who previously held KC4SM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4SM, oldest first.
- Mondro, Sandra L FL2006-09-26 → cancelled 2018-09-27
- MURPHY, STEVEN B VA2020-06-30 active