Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TOW callsign genealogy
Currently held by Morton, Shane M
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 K4TOW's current licensee, walking backwards.
- Morton, Shane MNCgranted 2014-09-29cancelled 2014-11-04
Successor callsigns
Callsigns held now by people who previously held K4TOW.
- LANGSTON, DONALD RNCgranted 2012-04-04cancelled 2024-05-29
All historical holders
Every license row we've seen with the callsign K4TOW, oldest first.
- LANGSTON, DONALD R NC2002-04-26 → cancelled 2002-05-28
- Morton, Shane M NC2024-09-17 active