Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5SDB callsign genealogy
Currently held by RICHBURG, PAUL L
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 N5SDB's current licensee, walking backwards.
- Bryan, Samuel DTXgranted 2012-06-08cancelled 2014-06-17
Successor callsigns
Callsigns held now by people who previously held N5SDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5SDB, oldest first.
- RICHBURG, PAUL L TX1991-02-12 → cancelled 2003-02-13
- Bryan, Samuel D TX2014-06-17 → cancelled 2026-06-18