Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1MS callsign genealogy
Currently held by StGermain, Michael C
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 KC1MS's current licensee, walking backwards.
- St Germain, Michael CMAgranted 2023-04-13cancelled 2023-10-31
Successor callsigns
Callsigns held now by people who previously held KC1MS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC1MS, oldest first.
- ARCURI, JOHN A MA2008-08-07 → cancelled 2020-11-06
- StGermain, Michael C MA2023-10-31 active