Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD6TWL callsign genealogy
Currently held by GRASSETTI, DAN G
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 KD6TWL's current licensee, walking backwards.
- Grassetti, Dan GCAgranted 2025-11-22cancelled 2025-12-12
Successor callsigns
Callsigns held now by people who previously held KD6TWL.
- Grassetti, Dan GCAgranted 2025-12-12
All historical holders
Every license row we've seen with the callsign KD6TWL, oldest first.
- GRASSETTI, DAN G CA2013-02-09 → cancelled 2025-03-25
- Grassetti, Dan G CA2025-12-12 → cancelled 2026-01-27