Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU4YS callsign genealogy
Currently held by DARRAH, JONATHAN D
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 KU4YS's current licensee, walking backwards.
- DARRAH, JONATHAN Dcancelled 1999-03-16
Successor callsigns
Callsigns held now by people who previously held KU4YS.
- Darrah, Jonathan DFLgranted 2017-10-04