Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6OOO callsign genealogy
Currently held by HAMMERSMITH, HENRY W
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 K6OOO's current licensee, walking backwards.
- HAMMERSMITH, HENRY WCAgranted 1998-01-09cancelled 2000-12-19
Successor callsigns
Callsigns held now by people who previously held K6OOO.
No current licensee on record previously held this callsign.