Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN0WDJ callsign genealogy
Currently held by JACOBSEN JR, WAYNE 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 KN0WDJ's current licensee, walking backwards.
- Jacobsen Jr, Wayne DIAgranted 2016-08-02cancelled 2016-09-24
Successor callsigns
Callsigns held now by people who previously held KN0WDJ.
No current licensee on record previously held this callsign.