Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0KHS callsign genealogy
Currently held by Mercer, Matthew E
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 K0KHS's current licensee, walking backwards.
- Searfoss, Kim HMOgranted 2019-03-01cancelled 2019-06-11
Successor callsigns
Callsigns held now by people who previously held K0KHS.
- Mercer, Matthew EKSgranted 2018-12-07
All historical holders
Every license row we've seen with the callsign K0KHS, oldest first.
- Mercer, Matthew E KS2007-02-08 → cancelled 2009-01-27
- Searfoss, Kim H MO2019-06-11 active