Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0SAJ callsign genealogy
Currently held by Johnson, Spencer A
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 K0SAJ's current licensee, walking backwards.
- Johnson, Spencer AMNgranted 2015-01-09cancelled 2015-01-30
Successor callsigns
Callsigns held now by people who previously held K0SAJ.
No current licensee on record previously held this callsign.