Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6ADC callsign genealogy
Currently held by Colman, Adam
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 W6ADC's current licensee, walking backwards.
- Colman, AdamCAgranted 2020-10-19cancelled 2024-10-11
Successor callsigns
Callsigns held now by people who previously held W6ADC.
- CASSONE, DUANE CMTgranted 2022-04-05
All historical holders
Every license row we've seen with the callsign W6ADC, oldest first.
- CASSONE, DUANE C MT2017-07-06 → cancelled 2022-04-05
- Colman, Adam CA2024-10-11 active