Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JWZ callsign genealogy
Currently held by Switlick, Robert
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 K9JWZ's current licensee, walking backwards.
- Switlick, RobertWIgranted 2006-07-31cancelled 2011-03-01
Successor callsigns
Callsigns held now by people who previously held K9JWZ.
No current licensee on record previously held this callsign.