Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KL4TW callsign genealogy
Currently held by Hayward, Michael J
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 KL4TW's current licensee, walking backwards.
- Hayward, Michael JAKgranted 2016-04-13cancelled 2016-05-06
Successor callsigns
Callsigns held now by people who previously held KL4TW.
No current licensee on record previously held this callsign.