Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0JMY callsign genealogy
Currently held by Yamanaka, John M
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 W0JMY's current licensee, walking backwards.
- Sandlin, Tim RTXgranted 2025-12-30cancelled 2026-01-24
Successor callsigns
Callsigns held now by people who previously held W0JMY.
- Yamanaka, John MCAgranted 2019-08-27cancelled 2020-09-26
All historical holders
Every license row we've seen with the callsign W0JMY, oldest first.
- SANDLIN, THEODORE J MO2004-07-27 → cancelled 2016-10-20
- Yamanaka, John M CA2017-08-15 → cancelled 2019-08-27
- Sandlin, Tim R TX2026-01-24 active