Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9PTW callsign genealogy
Currently held by Alvarez Jr, James E
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 KB9PTW's current licensee, walking backwards.
- Alvarez Jr, James EILgranted 2017-11-22cancelled 2018-03-21
Successor callsigns
Callsigns held now by people who previously held KB9PTW.
- Alvarez Jr, James EILgranted 2020-12-11
All historical holders
Every license row we've seen with the callsign KB9PTW, oldest first.
- ALVAREZ JR, JAMES E IL1997-03-06 → cancelled 2009-03-07
- Alvarez Jr, James E IL2018-03-21 → cancelled 2020-12-11