Elenco AM/FM Radio Kit - Manual (Page 43)

FM Detector Coil (T4)
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ASSEMBLY INSTRUCTIONS
Note: The line or notch must be pointing to the top of the PC board.
Some FM detector coils have a part number in place of the line/notch.
Figure U
R24 - 1k
Ω
Resistor
(brown-black-red-gold)
C21 - .01
μ
F Discap (103)
R21 - 47k
Ω
Resistor
(yellow-violet-orange-gold)
C19 - .01
μ
F Discap (103)
T3 - FM IF Coil
(Green Dot)
TP9 - Test Point Pin
(see Figure Q)
TP8 - Test Point Pin
(see Figure Q)
Q6 - 2N3904 Transistor
(see Figure R)
R20 - 10k Ω Resistor
(brown-black-orange-gold)
R22 - 1k
Ω
Resistor
(brown-black-red-gold)
C22 - .01
μ
F Discap (103)
T5 - FM Detector Coil
(Blue Dot)
R23 - 100
Ω
Resistor
(brown-black-brown-gold)
C23 - .02
μ
F Discap (203)
or .022
μ
F Discap (223)
R25 - 220
Ω
Resistor
(red-red-brown-gold)
C24 - 470
μ
F Lytic
(see Figure S)
D2 - 1N34A Diode
(see Figure T)
R26 - 1k
Ω
Resistor
(brown-black-red-gold)
R28 - 10k
Ω
Resistor
(brown-black-orange-gold)
C25 - 10
μ
F Lytic
(see Figure S)
R27 - 1k Ω Resistor
(brown-black-red-gold)
D3 - 1N34A Diode
(see Figure T)
T4 - FM Detector Coil
(Pink Dot)
(see Figure U)
Notch
Line
Lytic Capacitor
Figure S
Be sure that the
negative (short) lead is
in the correct hole on
the PC board.
Warning:
If the capacitor is connected with
incorrect polarity, it may heat up and
either leak, or cause the capacitor to
explode.
Polarity
mark
(–) (+)
Test Point Pin
Foil side of PC board
(green side)
Figure Q
Legend side of PC
board (blue side)
Diode
Figure T
Band
Cathode Anode
Be sure that the band is in the
same direction as marked on
the PC board.
NPN Transistor
Figure R
Mount so E lead is in the arrow
hole and flat side is in the same
direction as shown on the top
legend. Leave 1/4” between the
part and PC board.
Flat side
1/4”