Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4XL callsign genealogy
Currently held by Doty, Doug
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 AD4XL's current licensee, walking backwards.
- Doty, DougINgranted 2019-09-30cancelled 2021-12-14
Successor callsigns
Callsigns held now by people who previously held AD4XL.
- SHEPHERD, SUE ETNgranted 2018-09-05
All historical holders
Every license row we've seen with the callsign AD4XL, oldest first.
- Doty, Doug IN2021-12-14 active
- SHEPHERD, SUE E— → cancelled 1998-11-24