Ramsey Electronics FM10A manual RF amplifier and final components

ˆ17. Install glass bead diode D1.

ˆ18. Install glass bead diode D2.

ˆ19. Install glass bead diode D3.

ˆ20. Install R7, the small yellow trimmer potentiometer marked "104".

ˆ21. Install C19, the 470 µF electrolytic. Be sure to position for correct polarity.

ˆ22. Install C11, 4.7 to 10 µF electrolytic. Observe polarity.

ˆ23. Install R11, 4.7K [yellow-violet-red].

ˆ24. Install R12, 150K [brown-green-yellow].

ˆ25. Install C9, 220 pf [marked 220 or 221].

ˆ26. Install C10, .001 µF [marked .001 or 102 or 1nf].

ˆ27. Install C22, the large 1000 µF electrolytic capacitor. Observe polarity.

ˆ28. Install R8, 470 ohms [yellow-violet-brown].

ˆ29. Install C20, .001 µF (marked .001 or 102 or 1 nf).

RF amplifier and final components

ˆ30. Install shielded slug tuned coil L1. The larger tabs secure the shield can to the ground foil connections, while the two thin leads are the coil connections. If you find that the coil lead wires do not line up with the PC board holes, simply "pull" the coil insert from the shield can, rotate it a quarter-turn and insert back into the can. Make sure L1 is squarely against the top of the PC board before soldering, solid installation of L1 is essential to the frequency stability of your transmitter.

ˆ31. Install C15, 10 pf (marked 10 or 10K).

ˆ32. Install C14, 10 pf (marked 10 or 10K).

ˆ33. Install R9, 270 ohms [red-violet-brown].

ˆ34. Install C17, .001 µF (marked .001 or 102 or 1 nf).