Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA1EFM callsign genealogy
Currently held by CHURCHILL, MARC
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 KA1EFM's current licensee, walking backwards.
- CHURCHILL, MARCMAgranted 2023-04-25cancelled 2024-05-24
Successor callsigns
Callsigns held now by people who previously held KA1EFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA1EFM, oldest first.
- BLANTON, JAMES A MA1998-03-12 → cancelled 2010-03-13
- CHURCHILL, MARC MA2024-05-24 active