Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WH6CMO callsign genealogy
Currently held by Tong Jr, Robert
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 WH6CMO's current licensee, walking backwards.
- Tong Jr, RobertHIgranted 2021-04-02cancelled 2021-05-07
Successor callsigns
Callsigns held now by people who previously held WH6CMO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WH6CMO, oldest first.
- FOSTER, LINDA A HI1991-04-23 → cancelled 2003-04-24
- Tong Jr, Robert HI2021-05-07 active