Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ISD callsign genealogy
Currently held by LEWIS, MICHAEL A
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 K0ISD's current licensee, walking backwards.
- LEWIS, MICHAEL Acancelled 1998-01-07
Successor callsigns
Callsigns held now by people who previously held K0ISD.
- LEWIS, MICHAEL ASDgranted 2017-12-27