Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NQ0F callsign genealogy
Currently held by GRAFF, STEPHEN G
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 NQ0F's current licensee, walking backwards.
- Kopstain, DavidMOgranted 2024-01-24cancelled 2024-10-25
Successor callsigns
Callsigns held now by people who previously held NQ0F.
- GRAFF, STEPHEN GTXgranted 2022-08-26
All historical holders
Every license row we've seen with the callsign NQ0F, oldest first.
- GRAFF, STEPHEN G TX2021-08-10 → cancelled 2022-08-26
- Kopstain, David MO2024-10-25 active