Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5RFI callsign genealogy
Currently held by CASTAGNA, MICHAEL A
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 N5RFI's current licensee, walking backwards.
- CASTAGNA, MICHAEL ATXgranted 2011-07-26cancelled 2015-07-10
Successor callsigns
Callsigns held now by people who previously held N5RFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5RFI, oldest first.
- LINEBERGER, SHARI L TX1990-08-14 → cancelled 2002-08-15
- CASTAGNA, MICHAEL A AR2026-07-25 active