Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KV4OW callsign genealogy
Currently held by Messer Jr, William R
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 KV4OW'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 KV4OW.
- Messer Jr, William RVAgranted 2013-07-09cancelled 2025-07-10