Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW4DB callsign genealogy
Currently held by BACHLET, ROBERT 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 KW4DB's current licensee, walking backwards.
- BACHLET, ROBERT JSCgranted 2002-03-20cancelled 2008-08-19
Successor callsigns
Callsigns held now by people who previously held KW4DB.
- BACHLET, ROBERT JSCgranted 2002-03-20cancelled 2008-08-19
All historical holders
Every license row we've seen with the callsign KW4DB, oldest first.
- BACHLET, ROBERT J SC1999-07-15 → cancelled 2002-03-20
- BACHLET, ROBERT J SC2018-06-14 active