Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8MIB callsign genealogy
Currently held by BUTTERFIELD, MARK I
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 K8MIB's current licensee, walking backwards.
- BUTTERFIELD, MARK IMIgranted 2019-01-30cancelled 2019-06-18
Successor callsigns
Callsigns held now by people who previously held K8MIB.
No current licensee on record previously held this callsign.