Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6TWX callsign genealogy
Currently held by Muehlbauer, Michael J
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 N6TWX's current licensee, walking backwards.
- Muehlbauer, Michael JCAgranted 2017-12-18cancelled 2018-03-27
Successor callsigns
Callsigns held now by people who previously held N6TWX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6TWX, oldest first.
- Muehlbauer, Michael J CA2003-10-09 → cancelled 2015-10-27
- Muehlbauer, Michael J NV2018-03-27 active