Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0PTR callsign genealogy
Currently held by LARSON, PETER W
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 KA0PTR's current licensee, walking backwards.
- LARSON, PETER WCOgranted 2015-06-24cancelled 2015-07-14
Successor callsigns
Callsigns held now by people who previously held KA0PTR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0PTR, oldest first.
- SCHILLING, HENRY MN1998-01-23 → cancelled 2010-01-26
- LARSON, PETER W CO2015-07-14 active