Instruction manual

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QUIZ 1
1. The impedance of a 200µF capacitor at 100Hz is:
(a) 50Ω (b) 79.6Ω (c) 2Ω (d) 7.96Ω
2. If the frequency is 150MHz, the wavelength is
approximately . . .
(a) 20 meters (c) 6 meters
(b) 2 meters (d) need more information
3. Frequency modulation means the data or voice
changes the . . .
(a) amplitude (c) phase
(b) frequency (d) power
4. The audio in this radio is amplified using . . .
(a) an IC audio power amplifier
(b) a discrete power amplifier
(c) a preamplifier
(d) increased bandwidth
5. Double conversion is used to . . .
(a) remove undesired image
(b) reduce noise
(c) provide greater gain
(d) increase bandwidth
6. The first IF frequency in the AR-2N6 Radio Kit is:
(a) 455kHz (b) 10.7MHz (c) 150MHz (d) 50MHz
7. In order to get the second IF frequency, a crystal
oscillator must be set at:
(a) 455kHz (c) 10.7MHz
(b) 545kHz (d) 10.245MHz
8. The integrated circuit audio power amplifier used
in the AR-2N6 Kit has an input resistance of . . .
(a) 50kΩ (b) 5kΩ (c) 8Ω (d) 7.96Ω
9. Resistor R8 and capacitor C2 attached to the
audio volume control are used to . . .
(a) peak the audio (c)
flatten audio response
(b) provide bass boost (d) limit the bandwidth
10. When soldering electronic components, always
use . . .
(a) high wattage iron (c) rosin core solder
(b) acid core solder (d) paste flux
Answers: 1. d, 2. b, 3. b, 4. a, 5. a, 6. b, 7. d, 8. a, 9. d, 10. c
Figure 14
9V Battery
Feedback Capacitor
Volume control in
mid-position
104