Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NO6TW callsign genealogy
Currently held by Castle, Michael L
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 NO6TW's current licensee, walking backwards.
- Castle, Michael LNCgranted 2014-07-25cancelled 2017-09-02
Successor callsigns
Callsigns held now by people who previously held NO6TW.
No current licensee on record previously held this callsign.