Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3JEM callsign genealogy
Currently held by BOYLE, FREDRIC L
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 KC3JEM's current licensee, walking backwards.
- Mullaney, John EPAgranted 2024-02-07cancelled 2024-02-27
Successor callsigns
Callsigns held now by people who previously held KC3JEM.
- BOYLE, FREDRIC LMDgranted 2017-05-26
All historical holders
Every license row we've seen with the callsign KC3JEM, oldest first.
- BOYLE, FREDRIC L MD2017-05-08 → cancelled 2017-05-26
- Mullaney, John E PA2024-02-27 active