Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB1JT callsign genealogy
Currently held by Clark, Joseph 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 AB1JT's current licensee, walking backwards.
- Clark, Joseph TNYgranted 2013-01-28cancelled 2013-10-17
Successor callsigns
Callsigns held now by people who previously held AB1JT.
- Miller, Michael DNHgranted 2020-09-16
All historical holders
Every license row we've seen with the callsign AB1JT, oldest first.
- Miller, Michael D NH2005-12-28 → cancelled 2010-11-16
- Clark, Joseph T MI2023-09-20 active