Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5CSU callsign genealogy
Currently held by UPTON JR, JOHNNY R
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 W5CSU's current licensee, walking backwards.
- UPTON JR, JOHNNY Rcancelled 1997-09-17
Successor callsigns
Callsigns held now by people who previously held W5CSU.
No current licensee on record previously held this callsign.