Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD6VSN callsign genealogy
Currently held by DUDERSTADT JR, MACK 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 KD6VSN's current licensee, walking backwards.
- Duderstadt Jr, Mack HCAgranted 2013-10-28cancelled 2014-09-23
Successor callsigns
Callsigns held now by people who previously held KD6VSN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD6VSN, oldest first.
- CHOLODENKO, DEBRA Y CA1993-05-18 → cancelled 2005-05-19
- DUDERSTADT JR, MACK H CA2014-09-23 active