Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7COI callsign genealogy
Currently held by LADLE, ROBERT D
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 K7COI's current licensee, walking backwards.
- Durette, Kevin LWAgranted 2018-08-07cancelled 2018-08-28
Successor callsigns
Callsigns held now by people who previously held K7COI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7COI, oldest first.
- LADLE, ROBERT D WA2004-06-17 → cancelled 2016-07-12
- Durette, Kevin L OR2018-08-28 active