Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7SBI callsign genealogy
Currently held by Easterday, Mark J
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 K7SBI's current licensee, walking backwards.
- Easterday, Mark JAZgranted 2021-02-24cancelled 2021-03-16
Successor callsigns
Callsigns held now by people who previously held K7SBI.
No current licensee on record previously held this callsign.