Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KH6FF callsign genealogy
Currently held by APO, DAVID K
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 KH6FF's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KH6FF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KH6FF, oldest first.
- APO, DAVID K HI1999-01-07 → cancelled 2011-01-08
- Haight, Michael H HI2018-07-27 active