Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA1RD callsign genealogy
Currently held by Dillon, Robert F
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 AA1RD's current licensee, walking backwards.
- Dillon, Robert FSCgranted 2019-10-25cancelled 2021-09-28
Successor callsigns
Callsigns held now by people who previously held AA1RD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA1RD, oldest first.
- SANTOS III, FRANK S RI2006-06-27 → cancelled 2018-09-07
- Dillon, Robert F SC2021-09-28 active