Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7DDS callsign genealogy
Currently held by HENNESSY, MICHAEL T
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 N7DDS's current licensee, walking backwards.
- SWAN, DANIELORgranted 2005-01-04cancelled 2014-11-29
Successor callsigns
Callsigns held now by people who previously held N7DDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7DDS, oldest first.
- HENNESSY, MICHAEL T AZ1999-05-25 → cancelled 2011-05-26
- SWAN, DANIEL TX2024-10-12 active