Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CLK callsign genealogy
Currently held by Keller Jr, Charles 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 N4CLK's current licensee, walking backwards.
- KELLER JR, CHARLES LALgranted 2013-06-15cancelled 2018-07-13
Successor callsigns
Callsigns held now by people who previously held N4CLK.
No current licensee on record previously held this callsign.