Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4RTS callsign genealogy
Currently held by Shiflett, Robert T
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 KZ4RTS's current licensee, walking backwards.
- Shiflett, Robert TVAgranted 2017-10-30cancelled 2022-11-01
Successor callsigns
Callsigns held now by people who previously held KZ4RTS.
No current licensee on record previously held this callsign.