Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KAI callsign genealogy
Currently held by Makai, Timothy E
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 W4KAI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4KAI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4KAI, oldest first.
- CROPP SR, RICHARD E VA1993-11-09 → cancelled 2005-11-10
- Makai, Timothy E NY2024-02-06 active