Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4AZV callsign genealogy
Currently held by Rostow, Louis J
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 K4AZV's current licensee, walking backwards.
- ROSTOW, LOUIS JVAgranted 2003-06-18cancelled 2003-11-25
Successor callsigns
Callsigns held now by people who previously held K4AZV.
No current licensee on record previously held this callsign.