Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA5A callsign genealogy
Currently held by SHARPLESS III, CHARLES F
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 NA5A's current licensee, walking backwards.
- SHARPLESS III, CHARLES FTXgranted 2009-11-03cancelled 2015-02-21
Successor callsigns
Callsigns held now by people who previously held NA5A.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA5A, oldest first.
- FITZWATER, DAVID L TX2003-01-07 → cancelled 2015-02-03
- SHARPLESS III, CHARLES F TX2024-12-13 active