Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0FK callsign genealogy
Currently held by GIESKIENG, DAVID H
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 W0FK's current licensee, walking backwards.
- LADERMAN, LOUIS NMOgranted 1997-07-02cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held W0FK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0FK, oldest first.
- GIESKIENG, DAVID H CO1998-04-30 → cancelled 2000-08-30
- LADERMAN, LOUIS N MO2025-11-27 active