Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7DEM callsign genealogy
Currently held by Cowlitz ACS
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 N7DEM's current licensee, walking backwards.
- KF7NRRcancelledCowlitz Co Auxiliary Communications Service ClubWAgranted 2011-01-31cancelled 2011-03-08
Successor callsigns
Callsigns held now by people who previously held N7DEM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7DEM, oldest first.
- RAVIS, MICHAEL F NV1998-03-04 → cancelled 2010-03-05
- Cowlitz ACS WA2021-03-05 active