Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5TXZ callsign genealogy
Currently held by WALDRON, MARK E
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 N5TXZ's current licensee, walking backwards.
- WALDRON, MARK ETXgranted 2001-12-04cancelled 2011-01-25
Successor callsigns
Callsigns held now by people who previously held N5TXZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5TXZ, oldest first.
- JOHNSON, RONALD C TX1991-06-11 → cancelled 2003-06-12
- WALDRON, MARK E TX2020-10-31 active