Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ4M callsign genealogy
Currently held by Sarasota County Emergency Management
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 NJ4M's current licensee, walking backwards.
- KG4MIBcancelledSarasota Emergency Radio ClubFLgranted 2001-03-12cancelled 2001-04-03
Successor callsigns
Callsigns held now by people who previously held NJ4M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NJ4M, oldest first.
- LANDOLINA JR, WILLIAM C NC1992-06-16 → cancelled 1999-01-18
- Sarasota County Emergency Management FL2021-02-05 active