Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HTZ callsign genealogy
Currently held by Wandless, John O
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 K4HTZ's current licensee, walking backwards.
- Helton, Matthew DTNgranted 2020-07-20cancelled 2020-08-18
Successor callsigns
Callsigns held now by people who previously held K4HTZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HTZ, oldest first.
- Wandless, John O FL2007-10-26 → cancelled 2020-01-24
- Helton, Matthew D TN2020-08-18 active