WorksheetsSTEPS IN ALIGNING RECEIVERS
Total questions: 20
Worksheet time: 5mins
OK or NOT OK: The signal generator is to be tuned to the very high frequency (VHF) of the radio receiver.
OK
NOT OK
OK or NOT OK: The signal generator should be kept in the internal modulation position. The modulation depth should be adjusted to 30% or above.
OK
NOT OK
OK or NOT OK :The attenuator is to be adjusted to a maximum value.
OK
NOT OK
OK or NOT OK: The intermediate frequency (IF) signal is to be applied to the collector of the second intermediate frequency (IF) amplifier through the 0.1 μF capacitance capacitor.
OK
NOT OK
OK or NOT OK: The intermediate frequency (IF) signal should be shifted to the second intermediate frequency (IF) modulator base.
OK
NOT OK
OK or NOT OK: The same procedure is to be repeated at the collector and base of the first intermediate frequency (IF) amplifier. The cores of the corresponding intermediate frequency (IF) transformer is to be adjusted for maximum output in the power output meter.
OK
NOT OK
OK or NOT OK: The signal should be shifted now to the base of the frequency converter transistor. In this case, the attenuator is to be kept in the minimum position. Now, adjustment of the core of the intermediate frequency (IF) transformer in the collector of the frequency converter should be adjusted to get maximum response.
OK
NOT OK
OK or NOT OK: A reasonable 800 Hz note will be heard from the speaker showing the receiver’s sensitivity for intermediate frequency (IF).
OK
NOT OK
OK or NOT OK: The alignment of the intermediate frequency (IF) stages should be repeated not more than twice to finally arrive at the correct setting.
OK
NOT OK
OK or NOT OK: Once arrived at the final setting, the cores are to be sealed to prevent tampering of cores by the user.
OK
NOT OK
The signal generator is to be tuned to the ____________ of the radio receiver.
30% or above
IF
attenuator
modulation
It should be kept in the internal modulation position. The modulation depth should be adjusted to ____________.
attenuator
30% or above
IF
400Hz
____________ is to be adjusted to minimum value.
Medium wave
Attenuator
IF
Modulation
The intermediate frequency (IF) signal is to be applied to the collector of the second intermediate frequency (IF) amplifier, through the ____________ capacitance capacitor. The attenuator should be adjusted to get a convenient reading in the power output meter. Then, the core of the second intermediate frequency (IF) transformer should be adjusted to get a maximum reading in the power output meter.
0.1 mF
10mF
100mF
1000mF
The intermediate frequency (IF) signal should be shifted to the base of the second intermediate frequency (IF) amplifier. An improvement in the output should be indicated by the power output meter due to the gain of the amplifier. The core should be adjusted to get the ______________.
minimum output
maximum output
The same procedure is to be repeated at the collector and base of the first intermediate frequency (IF) amplifier. The cores of the corresponding intermediate frequency (IF) transformer are to be adjusted for maximum output in the ____________.
standard signal generator
power output meter
Signals should be shifted now to the base of the ____________. In this case, the attenuator is to be kept in the minimum position. Now, adjustment of the core of the intermediate frequency (IF) transformer in the collector of the frequency converter should be adjusted to get maximum response.
frequency converter transistor
NPN transistor
PNP transistor
transformer
Finally, the radio frequency (RF) probe must be kept short from the ferrite antenna. The power output meter is to be disconnected, and the loudspeaker is to be connected. A reasonable ____________ note will be heard from the speaker showing the receiver’s sensitivity for intermediate frequency (IF).
200Hz
400Hz
600Hz
800Hz
The alignment of the intermediate frequency (IF) stages should be repeated ____________ to finally arrive at the correct setting.
1-2 times
2-3 times
3-4 times
4-5 times
Once arrived at the final setting, the cores are to be sealed to prevent _____________ of the cores by the user.
tampering
tracking
aligning
thinking
