Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MOS callsign genealogy
Currently held by MOSER, JOHN 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 W4MOS's current licensee, walking backwards.
- MOSER, JOHN MNCgranted 2021-12-02cancelled 2022-03-19
Successor callsigns
Callsigns held now by people who previously held W4MOS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MOS, oldest first.
- DAWSON, GEORGE FL2006-06-22 → cancelled 2018-09-06
- MOSER, JOHN M NC2022-03-19 active