Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NU4DE callsign genealogy
Currently held by MC CLANAHAN, MICHAEL S
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 NU4DE's current licensee, walking backwards.
- BLACKFORD, RAYMOND WGAgranted 2009-01-29cancelled 2017-02-04
Successor callsigns
Callsigns held now by people who previously held NU4DE.
- MCCLANAHAN, MICHAEL SIAgranted 2018-06-14
All historical holders
Every license row we've seen with the callsign NU4DE, oldest first.
- MC CLANAHAN, MICHAEL S IA2000-07-04 → cancelled 2008-06-14
- BLACKFORD, RAYMOND W GA2017-02-04 active