Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5RZU callsign genealogy
Currently held by Zulu, Roni
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 K5RZU's current licensee, walking backwards.
- Zulu, RoniTXgranted 2021-02-04cancelled 2021-02-23
Successor callsigns
Callsigns held now by people who previously held K5RZU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5RZU, oldest first.
- HAY JR, STEPHEN J TX1995-06-13 → cancelled 2007-06-14
- Zulu, Roni TX2021-02-23 active