Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6TXW callsign genealogy
Currently held by Alles, Derik W
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 K6TXW's current licensee, walking backwards.
- Alles, Derik WCAgranted 2018-07-03cancelled 2018-07-21
Successor callsigns
Callsigns held now by people who previously held K6TXW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6TXW, oldest first.
- WALLSTROM, ROBERT L CA1995-11-28 → cancelled 2007-11-29
- Alles, Derik W CA2018-07-21 active