Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA9PKZ callsign genealogy
Currently held by Sier, Robert J
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 WA9PKZ's current licensee, walking backwards.
- Sier, Robert JWIgranted 2017-04-17cancelled 2017-05-19
Successor callsigns
Callsigns held now by people who previously held WA9PKZ.
No current licensee on record previously held this callsign.