Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4I callsign genealogy
Currently held by BISCHE, JOSEPH W
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 WB4I's current licensee, walking backwards.
- MEDINA, CARLOS DFLgranted 2018-10-17cancelled 2020-06-01
Successor callsigns
Callsigns held now by people who previously held WB4I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4I, oldest first.
- BISCHE, JOSEPH W FL2009-07-07 → cancelled 2018-05-13
- MEDINA, CARLOS D FL2020-06-01 active