Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AL7C callsign genealogy
Currently held by Derr, Justin C
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 AL7C's current licensee, walking backwards.
- Derr, Justin CAKgranted 2011-09-20cancelled 2020-11-10
Successor callsigns
Callsigns held now by people who previously held AL7C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AL7C, oldest first.
- Fromm, Alfred J OK2007-08-13 → cancelled 2019-11-07
- Derr, Justin C AK2020-11-10 active