Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0SO callsign genealogy
Currently held by HEITMANN, MICHAEL G
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 N0SO's current licensee, walking backwards.
- KF0SOcancelledcancelled 1998-10-29
Successor callsigns
Callsigns held now by people who previously held N0SO.
No current licensee on record previously held this callsign.