Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4WDH callsign genealogy
Currently held by Pischner, Norman M
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 KB4WDH's current licensee, walking backwards.
- Pischner, Gregory NFLgranted 2017-05-16cancelled 2017-06-13
Successor callsigns
Callsigns held now by people who previously held KB4WDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4WDH, oldest first.
- Pischner, Norman M FL2008-12-02 → cancelled 2016-03-12
- Pischner, Gregory N FL2017-06-13 active