Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6EXP callsign genealogy
Currently held by BLAKE, RALPH S
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 W6EXP's current licensee, walking backwards.
- Tsukamoto, James HCAgranted 2019-12-02cancelled 2019-12-20
Successor callsigns
Callsigns held now by people who previously held W6EXP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6EXP, oldest first.
- BLAKE, RALPH S CA1988-10-25 → cancelled 2000-10-26
- Tsukamoto, James H CA2019-12-20 active