Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N8COI callsign genealogy
Currently held by HENNES, ROBERT S
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 N8COI's current licensee, walking backwards.
- HENNES, ROBERT SOHgranted 2012-12-18cancelled 2013-01-08
Successor callsigns
Callsigns held now by people who previously held N8COI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8COI, oldest first.
- RIZOR, ROBERT L FL1992-04-28 → cancelled 2004-04-29
- HENNES, ROBERT S MO2013-01-08 → cancelled 2025-01-09