Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4RS callsign genealogy
Currently held by Varnum, Rick 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 AI4RS's current licensee, walking backwards.
- Varnum, Rick KGAgranted 2006-06-27cancelled 2006-09-12
Successor callsigns
Callsigns held now by people who previously held AI4RS.
- VARNUM, RICK KTNgranted 2016-10-29