Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO1RSM callsign genealogy
Currently held by RAMDIAL, MICHAEL H
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 WO1RSM's current licensee, walking backwards.
- RAMDIAL, MICHAEL HFLgranted 2021-09-14cancelled 2024-01-09
Successor callsigns
Callsigns held now by people who previously held WO1RSM.
No current licensee on record previously held this callsign.