Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4ASU callsign genealogy
Currently held by Smith, Mark J
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 KN4ASU's current licensee, walking backwards.
- Smith, Mark JNMgranted 2002-02-25cancelled 2005-01-04
Successor callsigns
Callsigns held now by people who previously held KN4ASU.
- Smith, Mark JNMgranted 2024-03-26