Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7LDB callsign genealogy
Currently held by Bykerk, Loren
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 W7LDB's current licensee, walking backwards.
- Bykerk, LorenAZgranted 2014-10-08cancelled 2018-02-03
Successor callsigns
Callsigns held now by people who previously held W7LDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7LDB, oldest first.
- WINKELMAIER, GEORGE J ID1996-04-04 → cancelled 2008-04-05
- Bykerk, Loren AZ2018-02-03 active