Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC6AFU callsign genealogy
Currently held by GUTHRIE, CHRISTOPHER B
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 KC6AFU's current licensee, walking backwards.
- Guthrie, Christopher BCAgranted 2018-07-16cancelled 2018-08-03
Successor callsigns
Callsigns held now by people who previously held KC6AFU.
- Guthrie, Christopher BCAgranted 2019-02-26
All historical holders
Every license row we've seen with the callsign KC6AFU, oldest first.
- GUTHRIE, CHRISTOPHER B CA1988-11-08 → cancelled 2000-11-09
- Guthrie, Christopher B CA2018-08-03 → cancelled 2019-02-26