Elenco AM Radio Kit - Manual (Page 23)

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ASSEMBLY INSTRUCTIONS - DETECTOR
C6 - 100
μF Lytic
(see Figure Da)
R5 - 27k
Ω Resistor
(red-violet-orange-gold)
T1 - IF Coil (yellow)
TP3 - Test Point Pin
(see Figure F)
C4 - 10 μF Lytic
(see Figure Da)
R11 - 3.3k
Ω Resistor
(orange-orange-red-gold)
C9 - .02
μF or .022μF Discap
(marked 203 or 223)
R12 - 2.2k
Ω Resistor
(red-red-red-gold)
R8 - 100
Ω Resistor
(brown-black-brown-gold)
T3 - IF Coil (black)
TP5 - Test Point Pin
(see Figure F)
C15 - .001
μF Discap
(marked 102)
D1 - 1N4148 Diode
(see Figure E)
C10 - .01 μF Discap
(marked 103)
With the power turned OFF, connect the VOM to test
point three (TP3) as shown in Figure 20.
Check that the VOM is adjusted to read 9 volts DC and
turn the power ON. The voltmeter should read approximately 1.5 volts DC. If your reading varies more
than 0.5 volts from this value, turn the power OFF and
check the polarity of D1, and resistors R11 and R5. Also
check that transformer T1 is properly installed.
With the power turned OFF, connect the positive lead of
the VOM to TP5 and the negative lead to TP10. Make
sure that the VOM is set to read 9 volts DC and turn the
power ON. The voltage on the VOM should be the same as your battery voltage or power supply voltage. If not,
turn OFF the power and check that T3 is properly
installed.
T3 TEST
If you do not have an RF generator, go to Section 3.
Figure 20
GND
TP10
STATIC MEASUREMENTS
(SW2 on the top [TR] position)
AGC ZERO SIGNAL BIAS