Banjo F♯7 chord (Double C)F♯ seventh on the 5-string banjo: 1 3 4 4, and 5 more shapes

Frets, string 4 to string 1: 1 3 4 4 (first position)

1. String 4 (C): 1st fret, index finger, C♯
2. String 3 (G): 3rd fret, middle finger, A♯
3. String 2 (C): 4th fret, ring finger, E
4. String 1 (D): 4th fret, little finger, F♯
5. String 5, the short g: open, G, not in the chord

Sounds: C♯ A♯ E F♯  ·  F♯7 is F♯, A♯, C♯, E (1 · 3 · 5 · ♭7)

The 5th string: the short g rubs against the F♯ in this shape, a semitone away: some players let it ring, some skip it.

With a capo: on the 4th fret it’s 2 2 0 4 (frets counted from the capo), an open D7 shape. Spike the 5th string at the 9th fret to keep it in tune with the capo.

Double C tuning: gCGCD, the short 5th string first, then strings 4 to 1.