Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9DZS callsign genealogy
Currently held by JANSSEN, JAMES 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 N9DZS's current licensee, walking backwards.
- Janssen, James HFLgranted 2023-01-14cancelled 2023-11-07
Successor callsigns
Callsigns held now by people who previously held N9DZS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9DZS, oldest first.
- JANSSEN, JAMES H IN1989-04-18 → cancelled 2001-04-19
- Janssen, James H FL2023-11-07 active