Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6CYB callsign genealogy
Currently held by Oh, Mike S
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 K6CYB's current licensee, walking backwards.
- Oh, Mike SCAgranted 2019-07-03cancelled 2019-08-02
Successor callsigns
Callsigns held now by people who previously held K6CYB.
No current licensee on record previously held this callsign.