Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1CLJ callsign genealogy
Currently held by JUMP, 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 W1CLJ's current licensee, walking backwards.
- JOHNSON, CLIFTON LEETNgranted 2014-01-28cancelled 2016-11-01
Successor callsigns
Callsigns held now by people who previously held W1CLJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1CLJ, oldest first.
- JUMP, CHARLES L CT1998-03-10 → cancelled 2010-03-11
- JOHNSON, CLIFTON LEE TN2016-11-01 active