Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DEX callsign genealogy
Currently held by GRANDSTAFF, DANIEL G
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 N4DEX's current licensee, walking backwards.
- SENYO, ERIKAALgranted 2023-02-15cancelled 2023-03-07
Successor callsigns
Callsigns held now by people who previously held N4DEX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4DEX, oldest first.
- GRANDSTAFF, DANIEL G NC1999-11-24 → cancelled 2011-11-26
- SENYO, ERIKA AL2023-03-07 active