F#4-G#4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 27.
Eb o x x | tr tr o Bb
Alternate R. H. A hole and F key trill:
Eb o x x | x tr o F-tr Bb
F#4-G#4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 176.
Eb o x x | tr tr o Eb o x x | tr tr o Bb Eb o x x | tr tr tr F
Heckel-System (German) Bassoon Trills and Shakes by Note Names