Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB8SP callsign genealogy
Currently held by Penix, Stephen
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 AB8SP's current licensee, walking backwards.
- Penix, StephenMIgranted 2015-03-23cancelled 2016-06-28
Successor callsigns
Callsigns held now by people who previously held AB8SP.
All historical holders
Every license row we've seen with the callsign AB8SP, oldest first.
- McMullen, Marshall R SC2004-03-18 → cancelled 2010-02-04
- Penix, Stephen MI2016-06-28 → cancelled 2024-02-23