Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4QM callsign genealogy
Currently held by COBB, MICHAEL A
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 KS4QM's current licensee, walking backwards.
- KC4OQQno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KS4QM.
- COBB, MICHAEL AGAgranted 2003-08-07cancelled 2008-11-25