Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6IAA callsign genealogy
Currently held by SCHWAB, DONALD R
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 K6IAA's current licensee, walking backwards.
- SCHWAB, DONALD RCAgranted 2011-01-11cancelled 2011-02-11
- WB5ZNAno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K6IAA.
- Kawaguchi, HiroshiGUgranted 2008-08-26cancelled 2020-08-27
All historical holders
Every license row we've seen with the callsign K6IAA, oldest first.
- Kawaguchi, Hiroshi GU2004-01-21 → cancelled 2008-08-26
- SCHWAB, DONALD R CA2020-11-23 active