Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NX5MD callsign genealogy
Currently held by Dallman, 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 NX5MD's current licensee, walking backwards.
- Dallman, Mark RTXgranted 2024-02-29cancelled 2024-05-17
Successor callsigns
Callsigns held now by people who previously held NX5MD.
No current licensee on record previously held this callsign.