Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9BSK callsign genealogy
Currently held by PFEIFFER, BARBARA S
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 KB9BSK's current licensee, walking backwards.
- PFEIFFER, BARBARA SINgranted 2011-10-04cancelled 2015-02-18
Successor callsigns
Callsigns held now by people who previously held KB9BSK.
- LAUF, MICHAEL JINgranted 1989-12-05cancelled 2002-03-07