Amreceptor

AM RADIO KIT
MODEL SUPERHET AM-550TK
7 TRANSISTORS

Assembly and Instruction Manual

Elenco Electronics, Inc.
TM

Copyright © 2003, 1999 Elenco Electronics, Inc.
TM

Revised 2003

REV-D

752550T

PARTS LIST
If you are a student, and any parts are missing or damaged, please see instructor or bookstore. If you purchased this AM radio kit from a distributor, catalog, etc., pleasecontact Elenco (address/phone/e-mail is at the back of this manual) for additional assistance, if needed.
TM

Electronics

RESISTORS
Qty.
1 3 1 1 2 1 2 1 1 1 1 1 1 1 1 1

Symbol
R19 R8, R15, R17 R10 R18 R6, R16 R12 R3, R11 R9 R2 R5 R7 R14 R1 R13 R4 Pot/SW1

Value
1W 1/4W 5% 100W 1/4W 5% 470W 1/4W 5% 820W 1/4W 5% 1kW 1/4W 5% 2.2kW 1/4W 5% 3.3kW 1/4W 5% 10kW 1/4W 5% 12kW 1/4W 5% 27kW1/4W 5% 39kW 1/4W 5% 47kW 1/4W 5% 56kW 1/4W 5% 82kW 1/4W 5% 1MW 1/4W 5% 50kW / SW

Color Code
brown-black-gold-gold brown-black-brown-gold yellow-violet-brown-gold gray-red-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 yellow-violet-orange-gold green-blue-orange-goldgray-red-orange-gold brown-black-green-gold Pot/SW with Nut and Washer

Part #
111000 131000 134700 138200 141000 142200 143300 151000 151200 152700 153900 154700 155600 158200 171000 192522

CAPACITORS
Qty.
1 1 2 5 2 1 1 2

Symbol
C1 C15 C3, C10 C2, C5, C7, C8, C9 C4, C11 C12 C6 C13, C14

Value
Variable .001mF .01mF .02mF or .022mF 10mF 47mF 100mF 470mF

Description
Tuning Discap (102)Discap (103) Discap (203) or (223) Electrolytic Electrolytic Electrolytic Electrolytic

Part #
211677 231036 241031 242010 271045 274742 281044 284743

SEMICONDUCTORS
Qty.
2 4 1 1 1

Symbol
D1, D2 Q1, Q2, Q3, Q4 Q5 Q6 Q7

Description
1N4148 Diode 2N3904 Transistor NPN 2N3906 Transistor PNP MPS6560 or 8050 Transistor NPN MPS6562 or 8550 Transistor PNP

Part #
314148 323904 323906 328050328550

COILS
Qty.
1 1 1 1 1

Symbol
L2 T1 T2 T3 L1

Value
Oscillator IF IF Detector Antenna

Description
(red dot) (yellow dot) (white dot) (black dot) with holders

Part #
430057 430260 430262 430264 484004

MISCELLANEOUS
Qty.
1 1 1 1 1 1 1 1

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

Part #
517040590096 590102 780128 622017 622030 622130 or 622131 626100

Qty.
1 3 3 3 8 1 1 1

Description
Earphone Screw 2-56 x 1/4” Screw M2.5 Nut 2-56 Test Pin Label, Dial Knob Wire 4” Solder

Part #
629250 641230 641310 644201 665008 720421 814920 9ST4

**** SAVE THE BOX THAT THIS KIT CAME IN. IT WILL BE USED ON PAGE 25. **** -1-

PARTS IDENTIFICATION
RESISTORS CAPACITORS SEMICONDUCTORSDiode

Resistor

50kW Potentiometer/ Switch with Nut and Washer Color Dot

Discap

Electrolytic Radial

Tuning Transistor

COILS
Coil

Ferrite Core Plastic Holders Coil Antenna Assembly

MISCELLANEOUS

Knob (pot) Knob (dial) Screw M2.5 Screw 2-56 x 1/4”

Nut 2-56 Earphone

OR

Test Pin

Battery Holder

Earphone Jack with Nut Speaker

Speaker Pad Label

Radio Stand-2-

IDENTIFYING RESISTOR VALUES
Use the 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 10Red 100 Orange 1,000 Yellow 10,000 Green 100,000 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 mF (microfarads). Most...