[ ] C-66, 15 pf (marked 15)
[ ] C-65, 30 pf variable capacitor. Note: Flat side is RF side, round side is ground.
If you get this installed backwards, it will detune the
circuit when you put a metallic screwdriver in it to make
adjustments.
[ ] R-66, 200 pf PCB type potentiometer
[ ] R-65, 220 ohms (red-red-brown)
[ ] R-63, 22 ohms (red-red-black)
[ ] R-64, 220 ohms (red-red-brown)
NOTE: Pay particular attention to the location and values of R-63, R-64, and R-65.
If you get these in the wrong places your receiver sensitivity and transmitter
power output may be degraded. Swapping the 22 ohm resistor with one of
the 220 ohm resistors is a common mistake in early BITX20 units and
possibly in BITX20A kits.
[ ] Solder
[ ] Clip Excess Lead Length
[ ] Inspect Solder Connections
Illustration 6: BFO/Carrier Oscillator Section (N7VE Photo)