Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD1UO callsign genealogy
Currently held by NELSON, DONALD E
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 KD1UO's current licensee, walking backwards.
- N1MQAno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KD1UO.
- NELSON, DONALD ENYgranted 2010-08-17cancelled 2022-08-23