Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9CTW callsign genealogy
Currently held by BLOM, ROBERT C
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 N9CTW's current licensee, walking backwards.
- Blom, Robert CILgranted 2019-05-28cancelled 2019-06-26
Successor callsigns
Callsigns held now by people who previously held N9CTW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9CTW, oldest first.
- BLOM, ROBERT C IL1999-06-08 → cancelled 2011-06-09
- Blom, bob C IL2019-06-26 active