Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SPL callsign genealogy
Currently held by MC COLLOUGH, THERON R
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 K7SPL's current licensee, walking backwards.
- Koteen, Brian RORgranted 2020-01-28cancelled 2020-04-24
Successor callsigns
Callsigns held now by people who previously held K7SPL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7SPL, oldest first.
- MC COLLOUGH, THERON R WA1996-11-18 → cancelled 2008-11-19
- Koteen, Brian R OR2020-04-24 active