Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA3LSB callsign genealogy
Currently held by KOSHINSKI, JOHN 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 KA3LSB's current licensee, walking backwards.
- Koshinski, John JPAgranted 2024-10-04cancelled 2024-10-22
Successor callsigns
Callsigns held now by people who previously held KA3LSB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA3LSB, oldest first.
- KOSHINSKI, JOHN J PA1995-06-06 → cancelled 2007-06-07
- Koshinski, John J PA2024-10-22 active