Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4CXL callsign genealogy
Currently held by CASAMASSINA, ROBERT N
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 N4CXL's current licensee, walking backwards.
- Collins, Jonathan KNCgranted 2016-07-13cancelled 2016-09-30
Successor callsigns
Callsigns held now by people who previously held N4CXL.
- Collins, Jonathan KNCgranted 2016-12-16cancelled 2017-08-11
All historical holders
Every license row we've seen with the callsign N4CXL, oldest first.
- CASAMASSINA, ROBERT N FL1995-03-14 → cancelled 2007-03-15
- Collins, Jonathan K NC2016-09-30 → cancelled 2016-12-16