Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM8MK callsign genealogy
Currently held by KOSDROSKY, MARTIN 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 KM8MK's current licensee, walking backwards.
- KOSDROSKY, MARTIN AOHgranted 2011-07-14cancelled 2012-01-14
Successor callsigns
Callsigns held now by people who previously held KM8MK.
No current licensee on record previously held this callsign.