Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4UY callsign genealogy
Currently held by BALDUF, JERALD L
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 KU4UY's current licensee, walking backwards.
- BALDUF, JERALD Lcancelled 1998-09-24
Successor callsigns
Callsigns held now by people who previously held KU4UY.
- BALDUF, JERALD LFLgranted 2010-05-07cancelled 2022-07-06