Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MQB callsign genealogy
Currently held by RITTER, BARBARA S
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 W4MQB's current licensee, walking backwards.
- RITTER, BARBARA SFLgranted 2006-08-04cancelled 2008-12-13
Successor callsigns
Callsigns held now by people who previously held W4MQB.
- RITTER JR, JOHNNIE MFLgranted 2016-03-14
All historical holders
Every license row we've seen with the callsign W4MQB, oldest first.
- RITTER JR, JOHNNIE M FL2006-05-19 → cancelled 2006-06-06
- RITTER, BARBARA S FL2018-11-13 active