Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0ECM callsign genealogy
Currently held by Proft, Jonathan 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 KC0ECM's current licensee, walking backwards.
- Proft, Jonathan SMNgranted 2017-02-02cancelled 2017-02-28
Successor callsigns
Callsigns held now by people who previously held KC0ECM.
- BURRELL, TIMOTHY WIAgranted 2008-10-18cancelled 2020-10-29
All historical holders
Every license row we've seen with the callsign KC0ECM, oldest first.
- Proft, Jonathan S MN2017-02-28 active
- BURRELL, TIMOTHY W— → cancelled 1998-10-28