Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9XMT callsign genealogy
Currently held by VOGT, CRAIG 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 N9XMT's current licensee, walking backwards.
- HELM, MATTHEW SFLgranted 2015-03-24cancelled 2015-10-16
Successor callsigns
Callsigns held now by people who previously held N9XMT.
- VOGT, CRAIG GWYgranted 2025-02-04
All historical holders
Every license row we've seen with the callsign N9XMT, oldest first.
- VOGT, CRAIG G WI1994-07-13 → cancelled 2004-07-20
- HELM, MATTHEW S FL2025-07-29 active