Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK7YSF callsign genealogy
Currently held by Sergeev, Alexander I
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 KK7YSF's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK7YSF.
- Sergeev, Alexander IWAgranted 2025-01-22cancelled 2025-04-08