Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6SV callsign genealogy
Currently held by Thielemann, James 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 K6SV's current licensee, walking backwards.
- Thielemann, James RCAgranted 2007-07-12cancelled 2014-09-09
Successor callsigns
Callsigns held now by people who previously held K6SV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6SV, oldest first.
- GIFFEN, RICHARD M NC1996-11-05 → cancelled 1998-04-15
- VARVITSIOTES, GEORGE S CA2010-04-20 → cancelled 2012-08-21
- Thielemann, James R CA2024-06-21 active