Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SJM callsign genealogy
Currently held by Mc Nichol, Stephen J
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 W4SJM's current licensee, walking backwards.
- Mc Nichol, Stephen JFLgranted 2017-04-27cancelled 2017-05-23
Successor callsigns
Callsigns held now by people who previously held W4SJM.
No current licensee on record previously held this callsign.