Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM3ARK callsign genealogy
Currently held by Siefring, Mark
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 KM3ARK's current licensee, walking backwards.
- Siefring, MarkPAgranted 2024-09-28cancelled 2024-11-22
Successor callsigns
Callsigns held now by people who previously held KM3ARK.
No current licensee on record previously held this callsign.