Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3QB callsign genealogy
Currently held by HAMMONDS, WILLIAM E
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 K3QB's current licensee, walking backwards.
- O'Connor, Brendan FMTgranted 2010-08-12cancelled 2010-10-16
Successor callsigns
Callsigns held now by people who previously held K3QB.
- HAMMONDS, WILLIAM ETXgranted 2008-09-23cancelled 2016-11-04
All historical holders
Every license row we've seen with the callsign K3QB, oldest first.
- HAMMONDS, WILLIAM E TX2000-06-02 → cancelled 2008-09-23
- O'Connor, Brendan F WA2020-07-28 active