Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SIA callsign genealogy
Currently held by Alpert, Stewart I
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 K6SIA's current licensee, walking backwards.
- Alpert, Stewart ICAgranted 2006-12-19cancelled 2015-07-14
Successor callsigns
Callsigns held now by people who previously held K6SIA.
- Alpert, Stewart ITXgranted 2020-12-29