Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4DKU callsign genealogy
Currently held by McCollough Jr, Norman D
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 WB4DKU's current licensee, walking backwards.
- McCollough Jr, Norman DFLgranted 2020-07-07cancelled 2020-07-28
Successor callsigns
Callsigns held now by people who previously held WB4DKU.
No current licensee on record previously held this callsign.