Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7HDD callsign genealogy
Currently held by Olson 249, Michael D
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 N7HDD's current licensee, walking backwards.
- OLSON, MICHAEL DIDgranted 2020-10-28cancelled 2021-09-03
Successor callsigns
Callsigns held now by people who previously held N7HDD.
No current licensee on record previously held this callsign.