Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD1MJS callsign genealogy
Currently held by Smith, Michael 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 KD1MJS's current licensee, walking backwards.
- Smith, Michael JMAgranted 2014-12-23cancelled 2015-01-10
Successor callsigns
Callsigns held now by people who previously held KD1MJS.
- Smith, Michael JMAgranted 2015-04-11