Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NX7XX callsign genealogy
Currently held by MANN, DAVID 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 NX7XX's current licensee, walking backwards.
- MANN, DAVID JAZgranted 2017-05-12cancelled 2025-06-03
- MANN, DAVID JNVgranted 2014-01-28cancelled 2017-05-12
- MANN, DAVID JTNgranted 2010-08-27cancelled 2014-01-28
- Skoog, Steven LORgranted 2025-11-21
- Skoog, Steven LORgranted 2015-12-08cancelled 2015-12-26
Successor callsigns
Callsigns held now by people who previously held NX7XX.
- NX7AAcancelledRIO VERDE DX ASSOCIATIONAZgranted 2017-06-27cancelled 2018-01-03
All historical holders
Every license row we've seen with the callsign NX7XX, oldest first.
- RIO VERDE DX ASSOCIATION AZ2017-06-06 → cancelled 2017-06-27
- MANN, DAVID J AZ2025-06-03 active