Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA3RD callsign genealogy
Currently held by Dillon, Robert O
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 AA3RD's current licensee, walking backwards.
- DIAZ, JOSE RCAgranted 2013-02-26cancelled 2017-06-03
Successor callsigns
Callsigns held now by people who previously held AA3RD.
- Dillon, Robert OPAgranted 2015-03-14cancelled 2015-06-20
All historical holders
Every license row we've seen with the callsign AA3RD, oldest first.
- BURGE, DAVID L PA2002-05-14 → cancelled 2014-05-28
- Dillon, Robert O PA2015-01-23 → cancelled 2015-03-14
- DIAZ, JOSE R TX2017-06-03 active