Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7FU callsign genealogy
Currently held by Fu, Zhongtao
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 AD7FU's current licensee, walking backwards.
- Fu, ZhongtaoORgranted 2014-04-15cancelled 2014-09-23
Successor callsigns
Callsigns held now by people who previously held AD7FU.
- Jackson, Roy LVAgranted 2016-01-27
All historical holders
Every license row we've seen with the callsign AD7FU, oldest first.
- Jackson, Roy L AZ1996-04-19 → cancelled 2005-05-07
- Fu, Zhongtao OR2014-09-23 active