Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4ICY callsign genealogy
Currently held by ROSEN, ROBERT H
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 N4ICY's current licensee, walking backwards.
- MANZER, LEIGH ANCgranted 2003-07-26cancelled 2010-05-01
Successor callsigns
Callsigns held now by people who previously held N4ICY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ICY, oldest first.
- ROSEN, ROBERT H FL1988-02-02 → cancelled 2000-02-03
- MANZER, LEIGH A AR2020-02-04 active