Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KE0MSB callsign genealogy
Currently held by Nicolai, Michael K
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 KE0MSB's current licensee, walking backwards.
- Barrett, Michael SNDgranted 2019-11-27cancelled 2019-12-17
Successor callsigns
Callsigns held now by people who previously held KE0MSB.
- Nicolai, Michael KNDgranted 2017-04-18
All historical holders
Every license row we've seen with the callsign KE0MSB, oldest first.
- Nicolai, Michael K ND2017-03-29 → cancelled 2017-04-18
- Barrett, Michael S ND2019-12-17 active