Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1SJM callsign genealogy
Currently held by Mauchline, Stephen J
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 K1SJM's current licensee, walking backwards.
- Mauchline, Stephen JNHgranted 2026-02-11cancelled 2026-03-21
Successor callsigns
Callsigns held now by people who previously held K1SJM.
No current licensee on record previously held this callsign.