Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9LS callsign genealogy
Currently held by SULLIVAN, LAWRENCE R
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 N9LS's current licensee, walking backwards.
- BRENNER, MARKCAgranted 2021-06-22cancelled 2022-07-06
Successor callsigns
Callsigns held now by people who previously held N9LS.
- Wilson, Alan JIDgranted 2020-06-13
All historical holders
Every license row we've seen with the callsign N9LS, oldest first.
- SULLIVAN, LAWRENCE R IL2007-11-16 → cancelled 2020-02-07
- Wilson, Alan J ID2020-03-03 → cancelled 2020-06-13
- Brenner, Mark S CA2022-07-06 active