Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4CJL callsign genealogy
Currently held by Leiss, John W
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 W4CJL's current licensee, walking backwards.
- Leiss, John WFLgranted 2007-03-22cancelled 2010-03-26
Successor callsigns
Callsigns held now by people who previously held W4CJL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4CJL, oldest first.
- HOISINGTON, DUANE W AL1995-03-30 → cancelled 2007-03-31
- Leiss, John W OH2019-12-31 active