Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0SDK callsign genealogy
Currently held by Affolter 245, Mark 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 KA0SDK's current licensee, walking backwards.
- Affolter, Mark WMNgranted 2022-09-24cancelled 2022-10-14
Successor callsigns
Callsigns held now by people who previously held KA0SDK.
No current licensee on record previously held this callsign.