Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0OBY callsign genealogy
Currently held by Hartman, David A
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 W0OBY's current licensee, walking backwards.
- Hartman, David AMNgranted 2018-06-11cancelled 2019-10-08
Successor callsigns
Callsigns held now by people who previously held W0OBY.
No current licensee on record previously held this callsign.