Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DK callsign genealogy
Currently held by Kalbfell, Kenneth 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 K3DK's current licensee, walking backwards.
- Hauer, Dieter KPAgranted 1996-11-05cancelled 2003-03-14
Successor callsigns
Callsigns held now by people who previously held K3DK.
- Kalbfell, Kenneth DCAgranted 2020-12-14
All historical holders
Every license row we've seen with the callsign K3DK, oldest first.
- WINCHESTER, ROBERT H PA1988-01-12 → cancelled 2000-01-13
- Kalbfell, Kenneth D CA2001-01-31 → cancelled 2001-02-23
- Hauer, Dieter K PA2023-03-07 active