Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4VM callsign genealogy
Currently held by Twigg Sr, Ronald L
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 AI4VM's current licensee, walking backwards.
- Twigg Sr, Ronald LKYgranted 2001-08-21cancelled 2007-03-20
Successor callsigns
Callsigns held now by people who previously held AI4VM.
- Twigg Sr, Ronald LKYgranted 2008-03-01cancelled 2010-04-24