Confidence: Medium · Source: FCC ULS · As of 2026-09-10
W4MPP callsign genealogy
Currently held by SCHMITZ, ROBERT G
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 W4MPP's current licensee, walking backwards.
- Patterson, MichaelALgranted 2016-06-20cancelled 2016-07-09
Successor callsigns
Callsigns held now by people who previously held W4MPP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MPP, oldest first.
- SCHMITZ, ROBERT G TN1988-08-09 → cancelled 2000-08-10
- Patterson, Michael AL2016-07-09 active