Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ROA callsign genealogy
Currently held by Baer, Mark E
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 W4ROA's current licensee, walking backwards.
- Baer, Mark EFLgranted 2006-08-12cancelled 2016-09-27
Successor callsigns
Callsigns held now by people who previously held W4ROA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ROA, oldest first.
- BAER, CHARLES I FL2006-03-17 → cancelled 2015-03-07
- Baer, Mark E FL2016-09-27 active