Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4DSI callsign genealogy
Currently held by AUSTIN, ROBERT T
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 N4DSI's current licensee, walking backwards.
- AUSTIN, ROBERT TGAgranted 2015-12-14cancelled 2016-11-04
Successor callsigns
Callsigns held now by people who previously held N4DSI.
- TANNER SR, THOMAS JSCgranted 2004-02-24cancelled 2016-05-25