Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI0SO callsign genealogy
Currently held by THOMPSON, CRAIG S
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 KI0SO's current licensee, walking backwards.
- THOMPSON, CRAIG SCOgranted 1997-06-17cancelled 2003-11-22
- WD0AHXno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KI0SO.
- Thompson, Craig SFLgranted 2019-04-12