Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KQ4SRN callsign genealogy
Currently held by Keyser, Sean M
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 KQ4SRN's current licensee, walking backwards.
- Keyser, Sean MFLgranted 2024-08-02cancelled 2024-11-02
Successor callsigns
Callsigns held now by people who previously held KQ4SRN.
- Keyser, Sean MFLgranted 2024-08-02cancelled 2024-11-02
All historical holders
Every license row we've seen with the callsign KQ4SRN, oldest first.
- Keyser, Sean M FL2024-06-08 → cancelled 2024-08-02
- Keyser, Sean M FL2024-11-02 active