Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HAK callsign genealogy
Currently held by Hacker, Michael T
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 K4HAK's current licensee, walking backwards.
- Hacker, Michael TVAgranted 2015-12-21cancelled 2016-01-30
Successor callsigns
Callsigns held now by people who previously held K4HAK.
No current licensee on record previously held this callsign.