Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6TCS callsign genealogy
Currently held by RENDAHL, DONALD L
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 W6TCS's current licensee, walking backwards.
- RENDAHL, DONALD LORgranted 2001-04-17cancelled 2005-03-02
Successor callsigns
Callsigns held now by people who previously held W6TCS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6TCS, oldest first.
- TIMRECK, FRANK H MA1987-09-22 → cancelled 1999-09-23
- RENDAHL, DONALD L WA2015-01-01 active