Curso De Radio Am-Fm

AM/FM RADIO KIT
MODEL AM/FM-108K
INTEGRAL CIRCUIT, 9 TRANSISTORS, 4 DIODES

Assembly and Instruction Manual

The AM/FM Radio project is divided into two parts, the AM Radio Section and the FM Radio Section. At this time, only identify the parts that you will need for the AM radio as listed below. DO NOT OPEN the bags listed for the FM radio. A separate parts list will be shown for the FMradio after you have completed the AM radio.

PARTS LIST FOR THE AM RADIO SECTION
If you are a student, and any parts are missing or damaged, please see instructor or bookstore. If you purchased this kit from a distributor, catalog, etc., please contact Elenco Electronics (address/phone/email is at the back of this manual) for additional assistance, if needed. DO NOT contact your place ofpurchase as they will not be able to help you.

RESISTORS
Qty.
1 1 2 1 1 1 2 1 1 1 1 1 1 1

Symbol
R45 R44 R38, 43 R41 R37 R42 R33, 36 R40 R32 R35 R39 R31 R34 Volume/S2

Value
10Ω 5% 1/4W 47Ω 5% 1/4W 100Ω 5% 1/4W 470Ω 5% 1/4W 1kΩ 5% 1/4W 2.2kΩ 5% 1/4W 3.3kΩ 5% 1/4W 10kΩ 5% 1/4W 12kΩ 5% 1/4W 27kΩ 5% 1/4W 39kΩ 5% 1/4W 56kΩ 5% 1/4W 1MΩ 5% 1/4W 50kΩ / SW

Color Code
brown-black-black-goldyellow-violet-black-gold brown-black-brown-gold yellow-violet-brown-gold brown-black-red-gold red-red-red-gold orange-orange-red-gold brown-black-orange-gold brown-red-orange-gold red-violet-orange-gold orange-white-orange-gold green-blue-orange-gold brown-black-green-gold Pot/SW with nut and washer

Part #
121000 124700 131000 134700 141000 142200 143300 151000 151200 152700 153900 155600 171000192522

CAPACITORS
Qty.
1 1 2 5 1 1 4 1 2

Symbol
C1 C30 C31, C29, C44 C28 C32, C34 C39, 38 33, 35, 36, 37 40, 41, 42 43

Value
Variable 150pF .01µF .02µF or .022µF .047µF .1µF 10µF 100µF 470µF

Description
Tuning Gang AM/FM Discap (151) Discap (103) Discap (203) or (223) Discap (473) Discap (104) Electrolytic Radial (Lytic) Electrolytic Radial (Lytic) Electrolytic Radial (Lytic)Part #
299904 221510 241031 242280 244780 251010 271045 281044 284744

SEMICONDUCTORS
Qty.
1 3 1

Symbol
D4 Q7, 8, 9 U1

Value
1N4148 2N3904 LM-386

Description
Diode Transistor NPN Integrated Circuit

Part #
314148 323904 330386

COILS
Qty.
1 1 1 1 1

MAGIC WAND
Part #
430057 430260 430262 430264 484004

Symbol
L5 T6 T7 T8 L4

Color
Red Yellow White BlackDescription
AM AM AM AM AM Oscillator IF IF IF Antenna with Holders

Qty.
1 1 4”

Description
Iron Core Brass Core Shrink Tubing

Part #
461000 661150 890120

MISCELLANEOUS
Qty.
1 1 1 1 1 1 1 1 1 1

Description
PC Board Switch Battery Holder Speaker Speaker Pad Knob (pot) Knob (dial) Earphone Jack with Nut Radio Stand Earphone

Part #
517055 541023 590096 590102 780128 622017 622030622130 or 622131 626100 629250

Qty.
3 3 3 1 1 8 1 1 8” 1

Description
Screw 2-56 x 1/4” Screw #3 Nut 2-56 Plastic Washer Socket 8-Pin Test Point Pin Label AM/FM Manual Wire 22 insulated Solder

Part #
641230 641310 644201 645108 664008 665008 723508 753508 814520 9ST4

**** SAVE THE BOX THAT THIS KIT CAME IN. IT WILL BE USED ON PAGES 23 & 52. **** -1-

IDENTIFYING RESISTOR VALUES
Usethe following information as a guide in properly identifying the value of resistors.

BAND 1 1st Digit
Color Black Brown Red Orange Yellow Green Blue Violet Gray White Digit 0 1 2 3 4 5 6 7 8 9

BAND 2 2nd Digit
Color Black Brown Red Orange Yellow Green Blue Violet Gray White Digit 0 1 2 3 4 5 6 7 8 9

Multiplier
Color Multiplier Black 1 Brown 10 Red 100 Orange 1,000 Yellow 10,000 Green100,000 Blue 1,000,000 Silver 0.01 Gold 0.1

Resistance Tolerance
Color Silver Gold Brown Red Orange Green Blue Violet Tolerance +10% +5% +1% +2% +3% +.5% +.25% +.1%

BANDS
1 2 Multiplier Tolerance

IDENTIFYING CAPACITOR VALUES
Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or µF (microfarads). Most capacitors will have their actual value...