Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB9PU callsign genealogy
Currently held by Knaepple III, George H
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 AB9PU's current licensee, walking backwards.
- Knaepple III, George HWIgranted 2003-01-11cancelled 2007-11-09
Successor callsigns
Callsigns held now by people who previously held AB9PU.
No current licensee on record previously held this callsign.