Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NU9L callsign genealogy
Currently held by Danforth, Harold 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 NU9L's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NU9L.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU9L, oldest first.
- Danforth, Harold J WI2007-03-05 → cancelled 2019-05-29
- SHELDON, PAUL A IL2020-07-24 active