Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF5FOC callsign genealogy
Currently held by Guest, Randall V
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 KF5FOC's current licensee, walking backwards.
- Guest, Randall VIDgranted 2016-06-07cancelled 2025-02-08
Successor callsigns
Callsigns held now by people who previously held KF5FOC.
- Guest, Randall VIDgranted 2016-06-07cancelled 2025-02-08
All historical holders
Every license row we've seen with the callsign KF5FOC, oldest first.
- Guest, Randall V UT2010-03-16 → cancelled 2016-06-07
- Guest, Randall V ID2025-02-08 active