Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4KHY callsign genealogy
Currently held by Sullivan, Robert L
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 W4KHY's current licensee, walking backwards.
- Sullivan, Robert LFLgranted 2012-03-27cancelled 2012-06-22
Successor callsigns
Callsigns held now by people who previously held W4KHY.
- Sullivan, Robert LOHgranted 2015-04-14