Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6RTH callsign genealogy
Currently held by MORTON SR, CALVIN T
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 W6RTH's current licensee, walking backwards.
- Thompson, Fredrick ECAgranted 2002-10-08cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held W6RTH.
- MORTON SR, CALVIN TFLgranted 1997-09-17cancelled 2009-09-18
All historical holders
Every license row we've seen with the callsign W6RTH, oldest first.
- THOMPSON, FREDRICK E CA2026-01-06 active
- MORTON SR, CALVIN T— → cancelled 1997-09-17