Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CSI callsign genealogy
Currently held by MILLER JR, 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 W9CSI's current licensee, walking backwards.
- MILLER III, ROBERT HINgranted 2003-03-12cancelled 2013-04-30
Successor callsigns
Callsigns held now by people who previously held W9CSI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9CSI, oldest first.
- MILLER JR, ROBERT H IN2005-10-13 → cancelled 2012-11-29
- MILLER III, ROBERT H IN2024-11-30 active