Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM5TW callsign genealogy
Currently held by JENSEN, GREG S
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 KM5TW's current licensee, walking backwards.
- French, Jeffrey RTXgranted 2012-06-29cancelled 2016-12-06
Successor callsigns
Callsigns held now by people who previously held KM5TW.
- JENSEN, GREG SOKgranted 2000-10-13cancelled 2012-10-16
All historical holders
Every license row we've seen with the callsign KM5TW, oldest first.
- JENSEN, GREG S OK1999-01-14 → cancelled 2000-10-13
- French, Jeffrey R TX2016-12-06 active