Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4MSD callsign genealogy
Currently held by BLAKE JR, HENRY Y
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 KN4MSD's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KN4MSD.
- BLAKE JR, HENRY YGAgranted 2018-06-22