Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SDK callsign genealogy
Currently held by ANDERSON, MILES W
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 K4SDK's current licensee, walking backwards.
- Kolenich, Daniel CALgranted 2022-04-18cancelled 2022-05-07
Successor callsigns
Callsigns held now by people who previously held K4SDK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SDK, oldest first.
- ANDERSON, MILES W GA2007-07-11 → cancelled 2019-07-12
- Kolenich, Daniel C AL2022-05-07 active