Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9FPQ callsign genealogy
Currently held by LUDWIG, RAYMOND O
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 N9FPQ's current licensee, walking backwards.
- Harlan, Derek RILgranted 2024-04-05cancelled 2025-06-14
Successor callsigns
Callsigns held now by people who previously held N9FPQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9FPQ, oldest first.
- LUDWIG, RAYMOND O IL2011-08-10 → cancelled 2023-10-31
- Harlan, Derek R IL2025-06-14 active