Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5KOW callsign genealogy
Currently held by Holland, Roger C
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 K5KOW's current licensee, walking backwards.
- Holland, Roger CTXgranted 2015-07-07cancelled 2015-08-15
Successor callsigns
Callsigns held now by people who previously held K5KOW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5KOW, oldest first.
- BUTLER, THOMAS D TX1997-12-16 → cancelled 2009-12-17
- Holland, Roger C TX2025-07-25 active