Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SAM callsign genealogy
Currently held by HAMILTON, MIKE T
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 W6SAM's current licensee, walking backwards.
- Hamilton, Mike TCAgranted 2009-02-12cancelled 2009-03-10
Successor callsigns
Callsigns held now by people who previously held W6SAM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6SAM, oldest first.
- MITSUHASHI, ISAMU CA1997-03-25 → cancelled 2008-12-12
- HAMILTON, MIKE T CA2019-01-30 active