Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6TWH callsign genealogy
Currently held by STEWART, MARK
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 K6TWH's current licensee, walking backwards.
- Stewart, MarkCAgranted 2024-03-22cancelled 2024-04-09
Successor callsigns
Callsigns held now by people who previously held K6TWH.
No current licensee on record previously held this callsign.