Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5DCZ callsign genealogy
Currently held by MANN, ROBERT L
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 N5DCZ's current licensee, walking backwards.
- Busby Jr, John MTXgranted 2004-04-15cancelled 2005-06-03
Successor callsigns
Callsigns held now by people who previously held N5DCZ.
- Busby Jr, John MTXgranted 2005-06-03cancelled 2007-04-03
All historical holders
Every license row we've seen with the callsign N5DCZ, oldest first.
- MANN, ROBERT L TX1987-09-22 → cancelled 1999-09-23
- Busby Jr, John M TX2005-06-03 → cancelled 2005-09-17