Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JMU callsign genealogy
Currently held by SCHINDLER, MARY ANN
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 W4JMU's current licensee, walking backwards.
- Schindler, Mary AFLgranted 2000-04-19cancelled 2000-05-12
Successor callsigns
Callsigns held now by people who previously held W4JMU.
No current licensee on record previously held this callsign.