Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WU6C callsign genealogy
Currently held by RADIO AMATEUR CONTEST CLUB
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 WU6C's current licensee, walking backwards.
- Sakaguchi, HiroshiCAgranted 2020-02-10cancelled 2023-10-03
Successor callsigns
Callsigns held now by people who previously held WU6C.
All historical holders
Every license row we've seen with the callsign WU6C, oldest first.
- RADIO AMATEUR CONTEST CLUB CA2000-11-14 → cancelled 2012-11-15
- COMEAU, RANDY P CA2012-12-04 → cancelled 2013-08-02
- BABCOCK, ROBERT S NC2015-08-21 → cancelled 2018-11-24
- McMahan, John T TN2020-12-29 → cancelled 2021-05-15
- Sakaguchi, Hiroshi CA2023-10-03 active