Ramsey Electronics SCA1, User Manual, Page: 7 / 20

SCA1
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SCA1 SUBCARRIER DEMODULATOR KIT PARTS LIST
RESISTORS
ˆ 1 2 ohm [red-black-gold] R13
ˆ 4 1K ohm [brown-black-red] R8,9,10,11
ˆ 1 2.2K ohm [red-red-red] R3
ˆ 4 10K ohm [brown-black-orange] R2,5,6,7
ˆ 1 22K ohm [red-red-orange] R14
ˆ 1 220K ohm [red-red-yellow] R4
CAPACITORS
ˆ 3 .001 uf disc [marked .001 or 102 or 1nf] C3,7,9,10,11
ˆ 5 .01 disc [marked .01 or 103 or 10nf] C1,6,8,14,20
ˆ 3 .1 uf disc [marked .1 or 104] C12,13,19
ˆ 1 100 pf disc [marked 100 or 101] C5
ˆ 1 2200 pf disc [marked 222, 2200 or 2.2 nf] C4
ˆ
5 10 uf electrolytic C2,15,16,21,22
ˆ 2 220 uf electrolytic C17,18
INDUCTORS
ˆ 2 1800 uH [large green cylinder marked 182]
SEMICONDUCTORS AND IC'S
ˆ
1 LM565 14 pin DIP
ˆ 1 LM386 8 pin DIP
ˆ 2 2N3904 NPN transistors
OTHER COMPONENTS
ˆ 1 SCA1 Printed circuit board
ˆ 1 DPDT push-button switch S1
ˆ
2 10K ohm PC mount potentiometer R1,12
ˆ 2 PC mount RCA jack J1,2
ˆ 1 PC mount subminiature speaker jack J3
ˆ 1 9-volt battery bracket
ˆ 1 9-volt battery snap-on clip
REQUIRED, NOT SUPPLIED
ˆ
1 9-volt alkaline battery
ˆ 1 Speaker or headphones
ˆ 1 Ramsey CSCA case and knob set
NOTE CONCERNING THE AUDIO OUTPUT JACK
Your receiver kit is supplied with a standard subminiature 2.5 mm (3/32") audio
output jack, which mates with commonly available earphone plugs and adapters
available at Radio Shack, such as 274-290 (plug) or 274-327 (adapter for 1/8"
mono plug). If you prefer to use another size and style jack, we suggest that you
still install the original jack and then wire your own jack in parallel with it rather to
rough up the PC board to accommodate your jack.