Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7LIU callsign genealogy
Currently held by LIU, STEPHEN 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 KB7LIU's current licensee, walking backwards.
- LIU, STEPHEN MORgranted 2022-12-28cancelled 2023-05-09
Successor callsigns
Callsigns held now by people who previously held KB7LIU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7LIU, oldest first.
- DALTON, PHYLLIS J AZ2001-02-26 → cancelled 2013-03-20
- LIU, STEPHEN M OR2023-05-09 active