Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7TRA callsign genealogy
Currently held by JOHNSON, DONALD 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 W7TRA's current licensee, walking backwards.
- Ambler, Thomas RAZgranted 2016-07-20cancelled 2016-08-27
Successor callsigns
Callsigns held now by people who previously held W7TRA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7TRA, oldest first.
- JOHNSON, DONALD E WA2000-06-30 → cancelled 2012-08-22
- Ambler, Thomas R AZ2026-06-09 active