Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6ZZA callsign genealogy
Currently held by SOWLE, BILL P
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 K6ZZA's current licensee, walking backwards.
- Sowle, Alice FCAgranted 2008-02-27cancelled 2009-06-27
Successor callsigns
Callsigns held now by people who previously held K6ZZA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6ZZA, oldest first.
- SOWLE, BILL P CA2007-05-09 → cancelled 2007-05-03
- Sowle, Alice CA2019-04-16 active