Confidence: Medium · Source: FCC ULS · As of 2026-09-11
W7LKB callsign genealogy
Currently held by MARQUARD, MARCUS J
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 W7LKB's current licensee, walking backwards.
- Butler, Larry KWAgranted 2013-10-17cancelled 2013-12-03
Successor callsigns
Callsigns held now by people who previously held W7LKB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7LKB, oldest first.
- MARQUARD, MARCUS J AZ1992-02-18 → cancelled 2004-02-19
- Butler, Larry K WA2023-11-10 active