Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7Q callsign genealogy
Currently held by Polyakov, Sergei P
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 KF7Q's current licensee, walking backwards.
- Polyakov, Sergei PWAgranted 2010-07-22cancelled 2010-10-15
Successor callsigns
Callsigns held now by people who previously held KF7Q.
- Upton, Danny GORgranted 2018-06-07
All historical holders
Every license row we've seen with the callsign KF7Q, oldest first.
- BOBLET, DARWIN C CA1995-10-22 → cancelled 2007-10-23
- Upton, Danny G OR2007-11-14 → cancelled 2008-08-05
- Polyakov, Sergei P WA2020-08-11 active