Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5DEM callsign genealogy
Currently held by MARTINEZ JR, EDUARDO R
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 N5DEM's current licensee, walking backwards.
- MARTINEZ JR, EDUARDO RTXgranted 2017-12-18cancelled 2020-07-11
Successor callsigns
Callsigns held now by people who previously held N5DEM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5DEM, oldest first.
- Jones II, Earl C TX2007-10-16 → cancelled 2019-10-17
- MARTINEZ JR, EDUARDO R TX2020-07-11 active