Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0OBL callsign genealogy
Currently held by NICHOLS, ALLEN D
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 KD0OBL's current licensee, walking backwards.
- Nichols, Allen DMOgranted 2006-01-31cancelled 2011-03-29
Successor callsigns
Callsigns held now by people who previously held KD0OBL.
No current licensee on record previously held this callsign.