Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD1MC callsign genealogy
Currently held by ZIMMERMAN, MARK T
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 KD1MC's current licensee, walking backwards.
- KC1UPIcancelledMaine Contesters ClubMEgranted 2024-04-13cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held KD1MC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD1MC, oldest first.
- ZIMMERMAN, MARK T MA1993-01-05 → cancelled 2005-01-06
- Maine Contesters Club ME2024-05-03 active