Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KV4OS callsign genealogy
Currently held by Loftus III, Owen 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 KV4OS's current licensee, walking backwards.
- Loftus III, Owen JGAgranted 2013-06-03cancelled 2013-06-19
Successor callsigns
Callsigns held now by people who previously held KV4OS.
No current licensee on record previously held this callsign.