Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9BOY callsign genealogy
Currently held by Vanderberg, 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 K9BOY's current licensee, walking backwards.
- Van Saders, Robert GNJgranted 2017-11-06cancelled 2018-06-12
Successor callsigns
Callsigns held now by people who previously held K9BOY.
- Vanderberg, Robert BCAgranted 2025-06-10
All historical holders
Every license row we've seen with the callsign K9BOY, oldest first.
- Vanderberg, Robert B CA2009-02-27 → cancelled 2015-06-26
- Van Saders, Robert G NJ2018-06-12 active