Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7OOL callsign genealogy
Currently held by JACOBS, JOE I
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 K7OOL's current licensee, walking backwards.
- Williamson, KennethARgranted 2026-02-26cancelled 2026-05-01
Successor callsigns
Callsigns held now by people who previously held K7OOL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7OOL, oldest first.
- JACOBS, JOE I NV2013-01-19 → cancelled 2025-04-16
- Williamson, Kenneth AR2026-05-01 active