Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4QV callsign genealogy
Currently held by AMBROSE, WILLIAM M
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 W4QV's current licensee, walking backwards.
- AMBROSE, FRANK JFLgranted 1997-08-13cancelled 2000-07-04
Successor callsigns
Callsigns held now by people who previously held W4QV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4QV, oldest first.
- AMBROSE, WILLIAM M FL1990-04-10 → cancelled 2000-04-30
- AMBROSE, FRANK J FL2020-06-17 active