Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9DHR callsign genealogy
Currently held by VAN DER BURGT, MARTIN J
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 K9DHR's current licensee, walking backwards.
- VAN DER BURGT, MARTIN JINgranted 1998-01-08cancelled 2002-04-10
Successor callsigns
Callsigns held now by people who previously held K9DHR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9DHR, oldest first.
- VAN DER BURGT, ADRIAN J WI1992-03-10 → cancelled 1998-04-25
- VAN DER BURGT, MARTIN J IN2022-03-08 active