SX-42 bfo coupling cap
 

Black pointer is resting on the tubular 7 pF cap body.
Goes to pin 5 of the 6H6 tube closest to middle of chassis.
Note: short black wire jumper from pin 5 to IFT.
Other end of tubular cap goes to a tie terminal, where
the shielded center conducter wire is also connected.
(Bare woven metal type shielded wiring.)