Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0TRD callsign genealogy
Currently held by Moyer, Mark R
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 W0TRD's current licensee, walking backwards.
- Moyer, Mark RIAgranted 2001-10-09cancelled 2007-06-16
Successor callsigns
Callsigns held now by people who previously held W0TRD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0TRD, oldest first.
- BILLINGS JR, THOMAS J MN1987-08-11 → cancelled 1999-08-16
- Moyer, Mark R IA2017-04-24 active