Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6LDK callsign genealogy
Currently held by Siwula, 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 K6LDK's current licensee, walking backwards.
- Siwula, Michael ACAgranted 1996-08-14cancelled 2001-08-25
Successor callsigns
Callsigns held now by people who previously held K6LDK.
No current licensee on record previously held this callsign.