Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5F callsign genealogy
Currently held by FERGUSON JR, JAMES H
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 AD5F's current licensee, walking backwards.
- LOCKE, DOUGLAS RTXgranted 2021-03-11cancelled 2021-08-23
Successor callsigns
Callsigns held now by people who previously held AD5F.
- Hill, Dylan RCAgranted 2019-08-02cancelled 2021-04-10
All historical holders
Every license row we've seen with the callsign AD5F, oldest first.
- FERGUSON JR, JAMES H TX2006-10-30 → cancelled 2018-11-30
- Hill, Dylan R CA2018-12-18 → cancelled 2019-08-02
- LOCKE, DOUGLAS R TX2021-08-23 active