Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6KM callsign genealogy
Currently held by SNIDER, WILLIAM L
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 K6KM's current licensee, walking backwards.
- Sadkowski, RobertoCAgranted 2018-05-02cancelled 2019-12-17
Successor callsigns
Callsigns held now by people who previously held K6KM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6KM, oldest first.
- SNIDER, WILLIAM L CA2011-06-21 → cancelled 2017-11-27
- Sadkowski, Roberto CA2019-12-17 active