Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7KOS callsign genealogy
Currently held by Lindsay, Michael 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 W7KOS's current licensee, walking backwards.
- Lindsay, MichaelWAgranted 2021-12-20cancelled 2022-01-07
Successor callsigns
Callsigns held now by people who previously held W7KOS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7KOS, oldest first.
- CHAMBERS, BUDDY R AZ1997-03-20 → cancelled 2009-03-21
- Lindsay, Michael L WA2022-01-07 active