uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K0AAI callsign genealogy

Currently held by Hasling, John S

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 K0AAI's current licensee, walking backwards.

  1. KF0JWVcancelled· G
    Gindulis, Allen AIAgranted 2021-03-30cancelled 2022-08-05
  2. KC0JHAcancelled· G
    Gindulis, Allen AIAgranted 2021-03-30cancelled 2022-07-16

Successor callsigns

Callsigns held now by people who previously held K0AAI.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K0AAI, oldest first.

  • Hasling, John S CO
    2003-08-01 → cancelled 2015-08-04
  • Gindulis, Allen A IA
    2022-08-05 active
← Back to K0AAI License history →