Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MRO callsign genealogy
Currently held by Maryland Radio Outdoors
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 W3MRO's current licensee, walking backwards.
- KC3ZXVcancelledMaryland Radio OutdoorsMDgranted 2024-10-16cancelled 2024-11-13
Successor callsigns
Callsigns held now by people who previously held W3MRO.
No current licensee on record previously held this callsign.