Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6TOK callsign genealogy
Currently held by Isaak, Morris E
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 W6TOK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6TOK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6TOK, oldest first.
- Isaak, Morris E CA2005-05-04 → cancelled 2017-07-29
- Tokar, Mark S CA2020-01-24 active