Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4CNK callsign genealogy
Currently held by VERTHEIN, ARTHUR 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 K4CNK's current licensee, walking backwards.
- FRIEDMAN, KENNETH PFLgranted 2016-04-05cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held K4CNK.
- KAEFF JR, CHARLES NKYgranted 2013-06-04cancelled 2014-07-04
All historical holders
Every license row we've seen with the callsign K4CNK, oldest first.
- VERTHEIN, ARTHUR L VA1988-02-23 → cancelled 2000-02-24
- KAEFF JR, CHARLES N KY2011-12-02 → cancelled 2013-06-04
- FRIEDMAN, KENNETH P FL2020-12-04 active