Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5UNH callsign genealogy
Currently held by Smith, Clayton M
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 N5UNH's current licensee, walking backwards.
- Smith, Clayton MTXgranted 2002-04-23cancelled 2003-04-29
Successor callsigns
Callsigns held now by people who previously held N5UNH.
- SMITH, MARK DTXgranted 2001-04-10cancelled 2013-04-11
All historical holders
Every license row we've seen with the callsign N5UNH, oldest first.
- SMITH, MARK D TX1991-07-02 → cancelled 2001-04-10
- Smith, Clayton M TX2003-04-29 → cancelled 2015-04-30