Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4LDH callsign genealogy
Currently held by MCNAMARA, TIMOTHY P
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 WB4LDH's current licensee, walking backwards.
- McNamara, Timothy PMOgranted 2010-04-20cancelled 2013-09-24
Successor callsigns
Callsigns held now by people who previously held WB4LDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4LDH, oldest first.
- PEREZ, PEDRO G FL2005-01-26 → cancelled 2011-10-11
- MCNAMARA, TIMOTHY P Fl2025-02-20 active