Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD6ZB callsign genealogy
Currently held by Sparks, Robert B
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 AD6ZB's current licensee, walking backwards.
- Sparks, Robert BCAgranted 2000-08-18cancelled 2001-08-17
Successor callsigns
Callsigns held now by people who previously held AD6ZB.
No current licensee on record previously held this callsign.