Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5OS callsign genealogy
Currently held by Shircliffe, Brian 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 AD5OS's current licensee, walking backwards.
- Shircliffe, Brian DTXgranted 2003-02-05cancelled 2003-08-07
Successor callsigns
Callsigns held now by people who previously held AD5OS.
No current licensee on record previously held this callsign.