Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3WOO callsign genealogy
Currently held by Schmackpfeffer, Adam M
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 W3WOO's current licensee, walking backwards.
- Schmackpfeffer, Adam MTXgranted 2019-12-11cancelled 2019-12-31
Successor callsigns
Callsigns held now by people who previously held W3WOO.
No current licensee on record previously held this callsign.