Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CSA callsign genealogy
Currently held by Shackelford, Douglas R
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 N4CSA's current licensee, walking backwards.
- Shackelford, Douglas RVAgranted 2011-03-29cancelled 2018-01-23
Successor callsigns
Callsigns held now by people who previously held N4CSA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4CSA, oldest first.
- GRUEN, WALTER J FL2005-04-07 → cancelled 2017-04-08
- Shackelford, Douglas R VA2018-01-23 active