Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4EIO callsign genealogy
Currently held by Butler, Linda
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 K4EIO's current licensee, walking backwards.
- Butler, LindaFLgranted 2004-12-06cancelled 2004-12-28
Successor callsigns
Callsigns held now by people who previously held K4EIO.
- BUTLER, LINDAFLgranted 2024-08-27