Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6CTM callsign genealogy
Currently held by Ross, Demian W
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 N6CTM's current licensee, walking backwards.
- Robusto, John DMDgranted 2023-12-12cancelled 2024-01-05
Successor callsigns
Callsigns held now by people who previously held N6CTM.
- Ross, Demian WCAgranted 2021-08-11cancelled 2025-06-21
All historical holders
Every license row we've seen with the callsign N6CTM, oldest first.
- Ross, Demian W CA2011-10-19 → cancelled 2013-01-25
- Robusto, John D MD2024-01-05 active