Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5CB callsign genealogy
Currently held by Duncan, David R
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 AD5CB's current licensee, walking backwards.
- Duncan, David RTXgranted 1999-03-30cancelled 2001-01-29
Successor callsigns
Callsigns held now by people who previously held AD5CB.
No current licensee on record previously held this callsign.