Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TGR callsign genealogy
Currently held by SWINDLER, SAMUEL A
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 N4TGR's current licensee, walking backwards.
- Swindler, Samuel AVAgranted 2011-07-26cancelled 2011-08-23
Successor callsigns
Callsigns held now by people who previously held N4TGR.
- MASON, Daniel DWAgranted 2009-11-24cancelled 2022-02-09
All historical holders
Every license row we've seen with the callsign N4TGR, oldest first.
- MASON JR, CHARLES F WA1998-04-22 → cancelled 2000-02-08
- SWINDLER, SAMUEL A VA2021-06-08 active