Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB6ZTR callsign genealogy
Currently held by Topanga Remote Base Association
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 WB6ZTR's current licensee, walking backwards.
- KN6AUIcancelledTopanga Remote Base AssociationCAgranted 2019-03-26cancelled 2019-04-19
Successor callsigns
Callsigns held now by people who previously held WB6ZTR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB6ZTR, oldest first.
- SULPHUR MOUNTAIN REPEATER ASSOCIATION CA1998-05-28 → cancelled 2010-05-29
- Topanga Remote Base Association CA2019-04-19 active