Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4QLL callsign genealogy
Currently held by Allen, Sidney 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 KB4QLL's current licensee, walking backwards.
- ALLEN, SIDNEY SFLgranted 2008-07-17cancelled 2015-03-20
Successor callsigns
Callsigns held now by people who previously held KB4QLL.
No current licensee on record previously held this callsign.