Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5RDT callsign genealogy
Currently held by THAYER, ROBERT D
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 N5RDT's current licensee, walking backwards.
- THAYER, ROBERT DTXgranted 2013-08-28cancelled 2016-03-08
Successor callsigns
Callsigns held now by people who previously held N5RDT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5RDT, oldest first.
- JABLONSKI, KENNETH P OK1990-08-07 → cancelled 2002-08-08
- THAYER, ROBERT D TX2026-01-07 active