Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB0JH callsign genealogy
Currently held by HELT III, JOHN 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 KB0JH's current licensee, walking backwards.
- HELT III, JOHN TTNgranted 2016-08-23cancelled 2017-08-22
Successor callsigns
Callsigns held now by people who previously held KB0JH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB0JH, oldest first.
- Gleason, Howard S MO2004-03-03 → cancelled 2016-06-01
- HELT III, JOHN T TN2017-08-22 active