Ramsey Electronics FM10A - Manual (Page 6)

PARTS LIST
CAPACITORS
ˆ
4 10 pf disc capacitor (marked 10 or 10K) (C7,8,14,15)
ˆ 1 18 pf disc capacitor (marked 18) (C16, see note below)
ˆ 1 22 pf disc capacitor (marked 22) (C16, see note below)
ˆ 1 27 pf disc capacitor (marked 27) (C16, see note below)
NOTE: Selecting 18, 22 or 27 pf for C16, establishes the FM-band
frequency adjustment range. See “Choosing an Operating
Frequency.”
ˆ 1 220 pf disc capacitor (marked 220 or 221) (C9)
ˆ 8 .001 µF disc capacitor (marked .001 or 102 or 1 nf)
(C6,10,12,13,17,18,20,21)
ˆ 2 .0047uF disc capacitors (marked 472) (C1,4)
ˆ 4 4.7 to 10 µF electrolytic capacitors (C2,3,5,11)
ˆ 1 470 µF electrolytic capacitor (C19)
ˆ 1 1000 µF electrolytic capacitor (C22)
RESISTORS
ˆ
2 270 ohm [red-violet-brown] (R9,R13)
ˆ 1 470 ohm [yellow-violet-brown] (R8)
ˆ 1 4.7K ohm [yellow-violet-red] (R11)
ˆ 3 10K ohm [brown-black-orange] (R3,R6,R10)
ˆ 2 15K ohm [brown-green-orange] (R3,R6)
ˆ 1 150K ohm [brown-green-yellow] (R12)
ˆ 1 100K yellow trimmer potentiometer (marked 104) (R7)
ˆ 2 1K yellow trimmer potentiometer (marked 102) (R1,R4)
SEMICONDUCTORS
ˆ
3 Glass bead diodes (similar to 1N4148) (D1,2,3)
ˆ 1 2SC2498 or 2570 NPN VHF transistor (Q1)
ˆ 1 18-pin DIP Custom FM Transmitter integrated circuit (U1) with
matching socket
HARDWARE AND MISCELLANEOUS
ˆ
1 38 KHz crystal (small silver cylindrical "can" with 2 small leads), taped
to a piece of paper.
ˆ 1 Shielded inductor coil (L1) (small square silver “can”)
ˆ 1 Ramsey FM10A Printed circuit board
ˆ 1 Plastic alignment screwdriver
ˆ 1 PC board mounted push-button switch
ˆ 3 RCA-type PC-mount jacks (J1,2,3)
ˆ 1 2.5 mm phone jack (J4)
ˆ 1 9-volt battery hold-down clamp
ˆ 1 9-volt battery snap connector