Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF6DIW callsign genealogy
Currently held by SHARP, RUSSELL
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 KF6DIW's current licensee, walking backwards.
- SHARP, RUSSELL SWAgranted 2025-12-10cancelled 2025-12-30
Successor callsigns
Callsigns held now by people who previously held KF6DIW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF6DIW, oldest first.
- SHARP, RUSSELL S CA2006-05-10 → cancelled 2018-05-11
- SHARP, RUSSELL WA2025-12-30 active