Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG4BR callsign genealogy
Currently held by Martin, Mark L
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 AG4BR's current licensee, walking backwards.
- Redwine, Robert WGAgranted 2000-04-25cancelled 2008-02-09
Successor callsigns
Callsigns held now by people who previously held AG4BR.
- Martin, Mark LVAgranted 2022-01-25
All historical holders
Every license row we've seen with the callsign AG4BR, oldest first.
- Martin, Mark L VA1999-12-15 → cancelled 2000-09-08
- Redwine, Robert W GA2017-11-17 active