Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W3RDM callsign genealogy
Currently held by Merrill Sr, Ralph D
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 W3RDM's current licensee, walking backwards.
- Merrill SR, Ralph DDEgranted 2003-03-12cancelled 2003-04-26
Successor callsigns
Callsigns held now by people who previously held W3RDM.
No current licensee on record previously held this callsign.