Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4HHD callsign genealogy
Currently held by DRENTH, HENDRIK 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 N4HHD's current licensee, walking backwards.
- DRENTH, HENDRIK HNCgranted 2024-12-17cancelled 2025-02-04
Successor callsigns
Callsigns held now by people who previously held N4HHD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4HHD, oldest first.
- BURGER, SANDRA I CA1990-10-09 → cancelled 2002-10-10
- DRENTH, HENDRIK H NC2025-02-04 active