Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KV4UD callsign genealogy
Currently held by LACKEY JR, WILLIAM 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 KV4UD's current licensee, walking backwards.
- LACKEY JR, WILLIAM JGAgranted 2013-03-11cancelled 2014-01-13
Successor callsigns
Callsigns held now by people who previously held KV4UD.
No current licensee on record previously held this callsign.