Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4WAV callsign genealogy
Currently held by KRIZEK, RICHARD A
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 KF4WAV's current licensee, walking backwards.
- Frost, Michael NNCgranted 2022-09-27cancelled 2022-10-21
Successor callsigns
Callsigns held now by people who previously held KF4WAV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4WAV, oldest first.
- KRIZEK, RICHARD A NC1998-02-26 → cancelled 2010-02-27
- Frost, Michael N TN2022-10-21 active