Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4MMO callsign genealogy
Currently held by Schuck, Geoffrey H
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 WA4MMO's current licensee, walking backwards.
- Schuck, Geoffrey HFLgranted 2009-12-23cancelled 2010-02-26
Successor callsigns
Callsigns held now by people who previously held WA4MMO.
No current licensee on record previously held this callsign.