Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7MDM callsign genealogy
Currently held by POSS, RALPH L
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 N7MDM's current licensee, walking backwards.
- Millican, Matthew DORgranted 2014-01-13cancelled 2023-03-17
Successor callsigns
Callsigns held now by people who previously held N7MDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7MDM, oldest first.
- POSS, RALPH L ID2009-05-02 → cancelled 2021-06-03
- Millican, Matthew D OR2023-03-17 active