ATT Test 13 EXAM NEWEST 2025 ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
What is amplitude modulation? - (answers)Information is encoded into carrier wave by varying
RF carriers amplitude and maintaining constant frequency
AM IF signal is at what frequency? - (answers)455 kHz
FM IF signal is at what frequency? - (answers)10 MHz
When the carrier is modulated, where is the information located? - (answers)Upper and lower
sidebands of composite signal
What is the difference frequency known as? - (answers)Intermediate Frequency
What is the receivers ability to faithfully reproduce a desired signal is based on what two things?
- (answers)Its sensitivity and selectivity
What does Phase Lock Loop do? - (answers)Compares output of VCO with a reference
frequency
What happens if the output of VCO is different than the reference frequency? - (answers)DC
controlling voltage is generated to steer VCO to correct output
What frequency range do AM broadcasts use? - (answers)535-1605 kHz
What are two types of AM receiver tuning? - (answers)Synthesized and manual
“眼睛”主题的中文文章
？
, What are two types of synthesized tuning? - (answers)Direct and indirect synthesis
What are 4 components of PLL? - (answers)Phase detector, loop filter, VCO, and frequency
counter/divider
What are 3 benefits of synthesized tuning? - (answers)Greater freq stability, freq changed
electronically, reduced cost, smaller size
What type of tuning incorporates PLL and VCO to provide desired frequency? -
(answers)Indirect synthesis
What type of tuning uses filtering, mixing, multiplication to provide specific frequency? -
(answers)Direct synthesis
What is purpose of RF section? - (answers)Eliminate all frequencies except tuned RF
What is a significant advantage of SSB? - (answers)Efficient use of RF spectrum
SSB transmissions limit the effects of what? - (answers)Selective feeding
What are 5 types of SSB? - (answers)Pilot carrier, vestigial sideband, lincompex, ISB, Standard
SSB
What type of SSB is used by the military? - (answers)ISB
What type of SSB is used by amateur radio operators? - (answers)Standard SSB
What type of SSB is used by TV video transmissions and conserves bandwidth? -
(answers)Vestigial
“眼睛”主题的中文文章
？
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
What is amplitude modulation? - (answers)Information is encoded into carrier wave by varying
RF carriers amplitude and maintaining constant frequency
AM IF signal is at what frequency? - (answers)455 kHz
FM IF signal is at what frequency? - (answers)10 MHz
When the carrier is modulated, where is the information located? - (answers)Upper and lower
sidebands of composite signal
What is the difference frequency known as? - (answers)Intermediate Frequency
What is the receivers ability to faithfully reproduce a desired signal is based on what two things?
- (answers)Its sensitivity and selectivity
What does Phase Lock Loop do? - (answers)Compares output of VCO with a reference
frequency
What happens if the output of VCO is different than the reference frequency? - (answers)DC
controlling voltage is generated to steer VCO to correct output
What frequency range do AM broadcasts use? - (answers)535-1605 kHz
What are two types of AM receiver tuning? - (answers)Synthesized and manual
“眼睛”主题的中文文章
？
, What are two types of synthesized tuning? - (answers)Direct and indirect synthesis
What are 4 components of PLL? - (answers)Phase detector, loop filter, VCO, and frequency
counter/divider
What are 3 benefits of synthesized tuning? - (answers)Greater freq stability, freq changed
electronically, reduced cost, smaller size
What type of tuning incorporates PLL and VCO to provide desired frequency? -
(answers)Indirect synthesis
What type of tuning uses filtering, mixing, multiplication to provide specific frequency? -
(answers)Direct synthesis
What is purpose of RF section? - (answers)Eliminate all frequencies except tuned RF
What is a significant advantage of SSB? - (answers)Efficient use of RF spectrum
SSB transmissions limit the effects of what? - (answers)Selective feeding
What are 5 types of SSB? - (answers)Pilot carrier, vestigial sideband, lincompex, ISB, Standard
SSB
What type of SSB is used by the military? - (answers)ISB
What type of SSB is used by amateur radio operators? - (answers)Standard SSB
What type of SSB is used by TV video transmissions and conserves bandwidth? -
(answers)Vestigial
“眼睛”主题的中文文章
？
