Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7MOS callsign genealogy
Currently held by SHELDON, MICHAEL O
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 WA7MOS's current licensee, walking backwards.
- SHELDON, MICHAEL OWAgranted 2018-10-22cancelled 2018-11-10
Successor callsigns
Callsigns held now by people who previously held WA7MOS.
No current licensee on record previously held this callsign.