Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9QL callsign genealogy
Currently held by Mc Grath, Robert A
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 K9QL's current licensee, walking backwards.
- HARKER, ALEX NINgranted 2022-06-07cancelled 2023-05-02
Successor callsigns
Callsigns held now by people who previously held K9QL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9QL, oldest first.
- Mc Grath, Robert A WI2011-02-08 → cancelled 2023-04-14
- HARKER, ALEX N IN2023-05-02 active