Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WI4FI callsign genealogy
Currently held by Orange County HSMM Special Interest Group
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 WI4FI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WI4FI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WI4FI, oldest first.
- Orange County HSMM Special Interest Group NC2010-10-13 → cancelled 2022-10-14
- Delong, Matthew OH2026-03-17 active