Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GRX callsign genealogy
Currently held by Miller Jr, James C
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 W9GRX's current licensee, walking backwards.
- Miller Jr, James CAZgranted 2011-04-29cancelled 2019-03-20
Successor callsigns
Callsigns held now by people who previously held W9GRX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9GRX, oldest first.
- Burden, Earl E AZ2004-10-27 → cancelled 2011-04-21
- Miller Jr, James C AZ2019-03-20 active