The Elusive Dominant 7th Chord

[Norman Evans]

Three frets up on any 6th tuning is a 3 note dominant 7th and also the minor of the chord on certain strings.
A6 open low to high

F# A C# E F# A C# E

A7 at third fret

A c E G A c E G

Amin at third fret

A C E g A C E g