Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC6YMM callsign genealogy
Currently held by Kerstetter, Michael S
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 KC6YMM's current licensee, walking backwards.
- Kerstetter, Michael SNJgranted 2021-04-22cancelled 2021-05-11
Successor callsigns
Callsigns held now by people who previously held KC6YMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC6YMM, oldest first.
- KERSTETTER, MICHAEL S CA2001-07-18 → cancelled 2013-07-17
- Kerstetter, Michael S NJ2021-05-11 active