Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9ATZ callsign genealogy
Currently held by Knowles, Deborah K
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 K9ATZ's current licensee, walking backwards.
- Knowles, Deborah KILgranted 2007-07-17cancelled 2007-08-07
Successor callsigns
Callsigns held now by people who previously held K9ATZ.
No current licensee on record previously held this callsign.