Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9MHC callsign genealogy
Currently held by KEUNEKE, CARL E
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 N9MHC's current licensee, walking backwards.
- COLLIGAN, MICHAEL HILgranted 2019-07-09cancelled 2019-07-30
Successor callsigns
Callsigns held now by people who previously held N9MHC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9MHC, oldest first.
- KEUNEKE, CARL E IN1991-08-06 → cancelled 2003-08-07
- COLLIGAN, MICHAEL H IL2019-07-30 active