Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3RMD callsign genealogy
Currently held by DONAHUE, RYAN 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 W3RMD's current licensee, walking backwards.
- DONAHUE, RYAN MPAgranted 2013-06-18cancelled 2014-04-29
Successor callsigns
Callsigns held now by people who previously held W3RMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3RMD, oldest first.
- TIEMEYER, CHARLIE MD2001-12-18 → cancelled 2014-03-04
- DONAHUE, RYAN M PA2014-04-29 → cancelled 2026-04-30