Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0SEI callsign genealogy
Currently held by Frazer, Martin G
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 K0SEI's current licensee, walking backwards.
- Frazer, Martin GIAgranted 2021-01-27cancelled 2021-03-02
Successor callsigns
Callsigns held now by people who previously held K0SEI.
No current licensee on record previously held this callsign.