2a553a CDC Volume 4

In order for two aircraft to communicate using the AN/ARN-118 in air-to-air mode, they must be on the same channel. The first aircraft is on channel 37Y, therefore the other aircraft must also be on the same channel, which is 37Y. The answer 100Y is incorrect because it is a different channel. Similarly, 37X and 100X are also incorrect as they do not match the channel of the first aircraft.

The correct answer is a side lobe suppression pulse (P2) 2 µ sec after the first interrogation pulse. In order for the IFF system to sense side lobe interrogations, a side lobe suppression pulse (P2) needs to be transmitted after the first interrogation pulse. This pulse helps to suppress any side lobe signals that may interfere with the accurate detection and identification of the target. By transmitting the P2 pulse after the first interrogation pulse, the system can effectively filter out any unwanted side lobe signals and improve the overall performance and reliability of the IFF system.

The correct answer is 1,090 MHz. The IFF transponder transmitter frequency is the frequency at which the transponder sends out signals to identify itself to other aircraft or ground stations. In this case, the IFF transponder transmitter frequency is 1,090 MHz, meaning that it operates at a frequency of 1,090 million cycles per second.

The correct answer is 100 wpm. This means that the TT-712/A printer is capable of printing 100 words per minute.

If the aircraft is located north of the VOR station, it will be positioned on the 000 degrees radial. The radial is a line extending outward from the VOR station, and the 000 degrees radial is the one that points directly north. Therefore, if the aircraft is north of the VOR station, it will be positioned on the 000 degrees radial.

When the MODE 4 CODE switch is momentarily placed in the spring-loaded HOLD position, the Mode 4 IFF code settings can be retained. However, in order for the settings to be retained, aircraft power must be maintained for at least 15 seconds after selecting HOLD.

The CYZ-10 data transfer device is designed to perform various functions related to data transfer and security. It is capable of storing frequency hopping data, communication security data, and electronic keying material. However, it does not have the capability to store host/application data. This means that the device is not intended for storing data related to specific hosts or applications, but rather focuses on other aspects of data transfer and security.

The correct answer states that the C-6567/AIC-25 interphone set control has eight monitor/volume controls that are switches and potentiometers. This implies that the control has multiple controls for monitoring and adjusting the volume, and these controls can be switched on or off. Additionally, the use of potentiometers suggests that the volume can be adjusted continuously rather than in fixed increments.

A TACAN beacon provides a station identification code every 30 seconds. This means that every 30 seconds, the TACAN beacon transmits a unique code that identifies the station. This code is used by aircraft or other receivers to determine their distance and bearing from the station. By transmitting the code every 30 seconds, the TACAN beacon ensures that aircraft and receivers have updated and accurate information for navigation purposes.

When the AN/ARN-118 is in the transmit-receiver mode, it produces signals that include the bearing, slant range distance, and BIT (Built-In Test) from a surface beacon. This means that the device is able to provide information about the direction, distance, and status of a surface beacon. It does not provide signals related to a cooperating aircraft (CA) or only distance and BIT from a CA.

The correct answer is six different radios through the intercom system. The seven position rotary select switch allows the operator to select, monitor, key, and modulate any one of the six different radios. This implies that there are six options available for the operator to choose from, indicating that the intercom system can connect to six different radios.

Airborne video tape recorder units do not have an advantage over film-based systems in terms of long processing time. This means that film-based systems do not require as much time for processing compared to video tape recorder units. This could be due to the fact that film-based systems use physical film rolls which can be easily processed and developed, while video tape recorder units require more time for transferring and editing the recorded footage.

The TO/FROM information in the TACAN receiver-transmitter adapter is developed by combining the magnetic bearing with the magnetic heading. The magnetic bearing refers to the direction towards a specific point relative to magnetic north, while the magnetic heading refers to the direction in which the aircraft's nose is pointing relative to magnetic north. By combining these two pieces of information, the adapter can determine whether the aircraft is heading towards or away from the desired point.

The TACAN receiver-transmitter adapter is designed to convert digital distance information into an analog output. This means that it takes the digital distance information, which is typically represented as a series of bits, and converts it into an analog signal that can be used to provide distance information. This analog output can then be used by other systems or devices to determine the distance between the TACAN receiver and the target location.

The TCAS (Traffic Alert and Collision Avoidance System) provides recommendations to the pilot for aircraft maneuvers. This means that it suggests actions to the pilot on how to avoid a potential collision with other aircraft. The other options mentioned in the question are all functions of the TCAS. It issues specific warnings to the aircrew, provides an initial alert from the TCAS processor, and attracts attention to the traffic display.

The purpose of the mode-S TCAS function is to establish and track aircraft identification and characteristics addresses. This means that it is used to identify and track specific aircraft by their unique addresses, allowing for effective communication and coordination between aircraft.

The phase difference between the 30 Hz reference and 30 Hz variable signal is determined by the magnetic bearing to the VOR station, which is 225 degrees. The phase difference is equal to the magnetic bearing, so the correct answer is 225 degrees.

The correct answer is 1,090 MHz. This frequency is the oscillator frequency of the IFF (Identification Friend or Foe) transmitter. The IFF system is used in military aircraft to differentiate between friendly and enemy aircraft. The oscillator frequency is an important component of the IFF system as it is used to transmit and receive signals for identification purposes.

When the IFF (Identification Friend or Foe) antenna switch is set to BOTH position, it means that both IFF antennas are selected simultaneously. In this configuration, the antennas are alternately switched between transmitting and receiving signals. The frequency at which this switching occurs is 38 times per second.

Air Force satellite communications systems typically use high power satellite transmitters, with power outputs ranging from 200 to 2,000 watts. This power range allows for effective and reliable communication over long distances and in challenging environments. Higher power outputs enable stronger signal transmission, ensuring that the communication signals can reach their intended destinations with minimal loss or interference. Additionally, the use of high power transmitters allows for increased bandwidth capacity, enabling the transmission of larger amounts of data.

The purpose of the KY-100 secure voice system main terminal unit is to encode and decode transmitted and received audio signals. This means that it is responsible for converting the audio signals into a format that can be securely transmitted and received. It ensures that the audio signals are protected and can only be understood by authorized individuals.

The C-6624/AIC-25 interphone station provides the crewmember with the ability to use both the CALL and interphone functions. This means that they can initiate a call to another station or communicate with other crewmembers using the interphone system. The station likely has separate buttons or controls for each function, allowing the crewmember to easily switch between them as needed. The hot mic and CALL functions, as well as the two-button and CALL functions, are not mentioned in relation to the C-6624/AIC-25 interphone station.

During the playback process in video tape recorders, the signal is transmitted as a voltage function. This means that the signal is represented by varying voltage levels. On the other hand, during the record process, the signal is transmitted as a current function. This means that the signal is represented by varying current levels. Therefore, the electrical difference between the record and playback processes is that playback is a voltage function while record is a current function.

When an ILS frequency is selected, the ARN-127 VOR receiver parks the HSI bearing pointer at the 4 o'clock position. This positioning helps the pilot to easily distinguish between the VOR and ILS indications on the HSI. By placing the bearing pointer at the 4 o'clock position, it allows for a clear separation between the VOR radial and the localizer course, which is typically displayed at the 12 o'clock position. This positioning aids in the pilot's situational awareness and helps in accurately navigating the aircraft during ILS approaches.

A deflection of two dots on the attitude director indicator glide slope deviation scale indicates that the aircraft is 0.6 degrees off the glide path.

The correct answer is A1, A22, A4, B1, and B2. These are the IFF (Identification Friend or Foe) information pulses used for mode 1 replies. Mode 1 is a military-specific mode of operation for IFF systems. The specific pulses listed in the answer are the ones used to transmit information and identify friendly aircraft.

The Traffic Collision Avoidance System (TCAS) is a technology used in aircraft to prevent mid-air collisions. It works by tracking nearby aircraft and generating displays to alert pilots of potential collisions. The correct answer is 30, indicating that the TCAS can simultaneously track and generate displays for up to 30 aircraft. This means that the system can provide real-time information and warnings for a significant number of surrounding aircraft, enhancing safety in busy airspace.

The frequency response of a video tape recorder is determined by the head gap width and tape speed. The head gap width refers to the distance between the magnetic heads that read and write data on the tape. A narrower gap allows for higher frequencies to be recorded and reproduced accurately. The tape speed, on the other hand, affects the amount of tape passing over the heads per unit of time. Higher tape speeds result in better high-frequency response. Therefore, both the head gap width and tape speed play a crucial role in determining the frequency response of a video tape recorder.

When there is a drum overload or drum jam in the airborne video tape recorder, it leads to the loss of the PG-2 signal. This loss of signal then activates the drum muting circuit. The purpose of the drum muting circuit is to mute or silence the audio signal from the drum in order to prevent any further damage or distortion. Therefore, in this situation, the loss of the PG-2 signal triggers the drum muting circuit to protect the system.

The information that is not sent to the tactical air navigation adapter from the receiver-transmitter is the TO/FROM indication. This means that the adapter does not receive any indication of whether the aircraft is heading towards or away from the navigational beacon.

The ARN-147 VOR/localizer receiver sends left/right deviation, flag alarm, and TO/FROM information to the HSI in VOR mode. This means that the receiver provides the pilot with the deviation from the desired course, alerts the pilot if there is any issue or flag alarm, and indicates whether the aircraft is flying towards or away from the VOR station. This information is crucial for the pilot to navigate accurately and maintain the desired course.

When the I/P control circuits of the IFF system are enabled, the coding circuits generate two complete reply trains for identification of position (I/P) operation.

The PRC-90 hand held emergency radio transmits on the fixed channels of 243.0 and 282.8 MHz.

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When the TACAN main reference burst occurs at the minimum amplitude of the 15 Hz variable signal, it indicates that the station is directly to the east or west of the observer. In this case, the azimuth to the station would be 90 degrees, as it is perpendicular to the observer's line of sight.

The TACAN system is designed to provide the pilot with accurate distance, bearing, and aural information. This means that it can determine the distance between the aircraft and a ground station, the direction or bearing to that station, and also provide aural cues or signals to assist the pilot in navigation. This information is crucial for pilots to accurately navigate and maintain situational awareness during flights.

The TACAN channel data and selected mode information are routed to the receiver-transmitter as a 16-bit ternary word. This means that the information is transmitted using a 16-bit binary code, where each bit can have three possible values (0, 1, or 2). This allows for a higher level of data transmission and accuracy compared to a binary word. The use of a ternary word ensures that the receiver-transmitter can accurately interpret and process the channel data and mode information.

A full-scale deflection of the HSI vertical needle during ILS operation indicates that the aircraft is off course from the runway centerline by 2.5 degrees. This means that the aircraft is deviating significantly from the desired path and needs to make corrections to get back on track. The degree of deflection is a crucial indicator for pilots to maintain proper alignment with the runway centerline during instrument landing system operations.

In tactical air navigation mode, each dot on the HSI represents an error from the selected course of 5.0 degrees. This means that if the aircraft is deviating from the selected course, the HSI will display the extent of the deviation by showing the number of dots away from the desired course. For example, if the aircraft is one dot to the right of the course, it means that it is off by 5.0 degrees to the right. This information helps pilots make necessary corrections to stay on track during their flight.

In mode 1, there is a limit to the number of IFF reply codes that can be selected. The correct answer is 32, which means that in mode 1, only 32 different IFF reply codes can be chosen.

The number of heads contained on the drum determines how far the tape should be wrapped around a spinning drum assembly. Each head is responsible for recording or playing back a specific track on the tape, so the more heads there are, the more tracks can be recorded or played back simultaneously. The tape needs to be wrapped around the drum enough times to align with each head, ensuring that all tracks are properly recorded or played back. Therefore, the number of heads on the drum determines the amount of tape that needs to be wrapped around it.

During TACAN operation, the fine bearing (+- 1 degree) is produced by comparing the phase of the 35 Hz variable signal and the ARB (Azimuth Reference Bit) signal. The 35 Hz variable signal represents the angular displacement between the aircraft and the ground station, while the ARB signal provides the reference for the bearing calculation. By comparing the phase of these two signals, the TACAN system can accurately determine the fine bearing of the aircraft.

When the IDENT switch is activated, the IFF transponder automatically transmits an identification of position reply for 20 seconds. This means that for a duration of 20 seconds, the transponder will send out a signal that identifies the position of the aircraft. This can be useful in situations where the aircraft needs to be easily identified or located by air traffic control or other aircraft.

The event mark signal in the airborne video tape recorder unit is recorded on one of the audio channels. This means that the event mark signal is combined with the audio signal on a single channel. This allows for easy synchronization of the event mark signal with the corresponding audio signal during playback or analysis.

The C-10091/A control power supply is the component that controls the operation of the TT-712/A printer in the ASC-19(V)3 SATCOM system.

The correct answer is four 0.5-µ sec pulses, spaced 2 µ sec apart. This is because the identification, friend or foe mode 4 interrogation consists of four pulses that are 0.5 microseconds in duration and spaced 2 microseconds apart. This specific pattern of pulses is used to distinguish between friendly and hostile aircraft.

The frequency of the pulse generator sampling signals used in the servo control circuits is 30 Hz. This is because the drum speed of 1,800 revolutions per minute can be converted to revolutions per second by dividing it by 60, resulting in 30 revolutions per second. Since each revolution corresponds to one pulse, the frequency of the pulse generator sampling signals is 30 Hz.

The C-9665(V)1/A radio set control is the correct answer because it contains all controls for UHF LOS (Line of Sight) operation and for switching system control for satellite operation. This means that it has the necessary controls to operate the UHF LOS system and also to switch the system control for satellite operation. The other options listed do not have the same capabilities as the C-9665(V)1/A radio set control.

The relative bearing is the angle between the aircraft's heading and the position of the object being observed. In this case, the HSI indicator displays a magnetic heading of 45 degrees and a magnetic bearing of 5 degrees to the tactical air navigation station. To determine the relative bearing, we subtract the magnetic bearing from the magnetic heading. Therefore, 45 degrees - 5 degrees = 40 degrees. However, since the relative bearing is always measured clockwise from the aircraft's nose, we add 360 degrees to the result. Hence, the correct answer is 320 degrees.

The Traffic Alert and Collision Avoidance System (TCAS) is designed to detect and track other aircraft in the vicinity to help prevent mid-air collisions. The correct answer states that the system surveys valid transponder traffic within a range of 15-40 NMs forward, 5-15 NMs aft, and 10-20 NMs on both sides of the aircraft. This means that the TCAS is capable of monitoring a relatively wide area around the aircraft, including both the front, back, and sides, to provide a comprehensive view of potential traffic threats.