Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MAD callsign genealogy
Currently held by Baker, Robert H
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 W4MAD's current licensee, walking backwards.
- Baker, Robert HNCgranted 2007-08-14cancelled 2013-05-10
Successor callsigns
Callsigns held now by people who previously held W4MAD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MAD, oldest first.
- MERRILL, ALFRED H VA2001-04-20 → cancelled 2013-04-23
- Baker, Robert H NC2023-02-14 active