Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4VB callsign genealogy
Currently held by SWISHER, JOHN B
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 AI4VB's current licensee, walking backwards.
- SWISHER, JOHN BTNgranted 2003-03-04cancelled 2007-03-13
Successor callsigns
Callsigns held now by people who previously held AI4VB.
- SWISHER, JOHN BTNgranted 2017-01-12