Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AC1JJ callsign genealogy
Currently held by Brennessel, Spencer
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 AC1JJ's current licensee, walking backwards.
- Brennessel, SpencerMAgranted 2020-05-26cancelled 2020-06-01
Successor callsigns
Callsigns held now by people who previously held AC1JJ.
- Brennessel, SpencerCAgranted 2020-07-07