Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KE6MAR callsign genealogy
Currently held by TSENG, SILVIA
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 KE6MAR's current licensee, walking backwards.
- Barthlow, John SCAgranted 2005-12-16cancelled 2007-11-14
Successor callsigns
Callsigns held now by people who previously held KE6MAR.
- Barthlow, John SCAgranted 2012-10-06cancelled 2024-10-08
All historical holders
Every license row we've seen with the callsign KE6MAR, oldest first.
- TSENG, SILVIA CA1994-09-07 → cancelled 2006-09-08
- Barthlow, John S KS2007-11-14 → cancelled 2012-10-06