Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9ALR callsign genealogy
Currently held by FROEHLICH, ARTHUR E
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 K9ALR's current licensee, walking backwards.
- FRIEHLICH, LAWRENCE BCAgranted 2007-09-20cancelled 2015-12-11
Successor callsigns
Callsigns held now by people who previously held K9ALR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9ALR, oldest first.
- FROEHLICH, ARTHUR E CA2005-02-09 → cancelled 2015-01-11
- FROEHLICH, LAWRENCE B CA2025-12-02 active