Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5STZ callsign genealogy
Currently held by Polak, Stanley T
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 K5STZ's current licensee, walking backwards.
- Polak, Stanley TTXgranted 2008-09-30cancelled 2009-08-14
Successor callsigns
Callsigns held now by people who previously held K5STZ.
No current licensee on record previously held this callsign.