Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MBS callsign genealogy
Currently held by Sorrell Mr, Michael B
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 K4MBS's current licensee, walking backwards.
- Sorrell, Michael BNCgranted 2000-02-08cancelled 2000-02-29
Successor callsigns
Callsigns held now by people who previously held K4MBS.
No current licensee on record previously held this callsign.