Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3ADC callsign genealogy
Currently held by King, John F
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 W3ADC's current licensee, walking backwards.
- King, John FMDgranted 2003-07-08cancelled 2004-04-28
Successor callsigns
Callsigns held now by people who previously held W3ADC.
No current licensee on record previously held this callsign.