Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4KO callsign genealogy
Currently held by Hollock, Michael R
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 KW4KO's current licensee, walking backwards.
- Hollock, Michael RVAgranted 2015-03-09cancelled 2015-06-18
Successor callsigns
Callsigns held now by people who previously held KW4KO.
- Hollock, Michael RVAgranted 2017-02-14cancelled 2019-10-22