Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4MBS callsign genealogy
Currently held by Sheets, Matthew 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 KB4MBS's current licensee, walking backwards.
- Sheets, Matthew BALgranted 2011-08-12cancelled 2011-08-30
Successor callsigns
Callsigns held now by people who previously held KB4MBS.
- FISCHER, MARGARET HSCgranted 2013-04-23cancelled 2025-04-24