Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7ZID callsign genealogy
Currently held by Sullivan, Tom C
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 W7ZID's current licensee, walking backwards.
- Sullivan, Tom CIDgranted 2009-11-10cancelled 2011-04-15
Successor callsigns
Callsigns held now by people who previously held W7ZID.
No current licensee on record previously held this callsign.