Communication, light signa parte 1

When bending coaxial cable, the bend radius should be at least. 10 times the diameter of the cable. 15 times the diameter of the cable. 20 times the diameter of the cable.

(Refer to Figure 23.) What is this antenna used for?. This is an altitude encoder used with transponders. This is a TCAS receiver used with monitoring and alerting systems. This is an aircraft radar beacon transponder used for location identification.

When installing coaxial cable, it should be secured firmly along its entire length. at one-foot intervals. wherever the cable sags. at two-foot intervals.

A gasket or sealant is used between the antenna mast and fuselage skin. to prevent the entry of moisture. for aircraft pressurization only. to prevent abrasion between the antenna mast and fuselage skin.

When must the radio station license be displayed in an aircraft equipped with a two-way radio?. When the aircraft is operated outside the United States. When the aircraft is returned to service. When the aircraft is certified for IFR flight.

A radar altimeter determines altitude by. transmitting a signal and receiving back a reflected signal. receiving signals transmitted from ground radar stations. means of transponder interrogation.

An emergency locator transmitter (ELT) is normally activated by an inertial switch or equivalent mechanism if subjected to a force of a prescribed intensity and duration. It must activate when the force is applied. parallel to the longitudinal axis of the aircraft. parallel to the vertical axis of the aircraft. in any direction relative to the aircraft axes.

The addition of avionics and associated antenna systems forward of the CG limit will affect. empty weight and useful load. CG limits and useful load. useful load and maximum gross weight.

A radar altimeter indicates. flight level (pressure) altitude. altitude above sea level. altitude above ground level.

How should a coaxial cable be routed?. Parallel with stringers or ribs. Perpendicular to stringers or ribs. As directly as possible.

(Refer to Figure 31.) What kind of antenna is this?. A lightning detector system antenna. A marker beacon receiver antenna. A satellite weather antenna.

The purpose of a localizer is to. set the airplane on the proper approach angle to the runway. indicate the distance the airplane is from the end of the runway. align the airplane with the center of the runway.

(Refer to Figure 30.) What kind of antenna is this?. A lightning detector system antenna. A VOR and localizer antenna. A satellite weather antenna.

When would a U.S. resident NOT be required to hold a Federal Communications Commission (FCC) Restricted Radio Telephone Operator Permit to operate two-way aircraft VHF radio equipment?. When flying to or communicating with destinations outside the United States. When flying or communicating within the United States. When the radio equipment is operated in aircraft certified for VFR flight only.

On modern large aircraft, what electronic device typically monitors flight parameters and performs autopilot functions?. Flight management computer. Transponder. Control/display unit.

(Refer to Figure 16.) Which of the antennas shown is a typical DME antenna?. 1. 2. 4.

(Refer to Figure 25.) What kind of antenna is this?. A dipole antenna. A canted antenna. A Marconi antenna.

When flags such as NAV, HDG, or GS are displayed on an HSI, the indication is. that function is inoperative. that function is operating. to call attention to deviation from the desired setting, or flight path, or heading, etc.

When installing a DME antenna, it should be aligned with the. VOR antenna. chord line. centerline on the airplane.

(Refer to Figure 24.) What kind of antenna is this?. A dipole antenna. A Marconi antenna. A loop antenna.

A DME antenna should be installed on the aircraft in a position that will. not be blanked out by the wing when the aircraft is banked. not be blanked out by the vertical stabilizer. facilitate cleaning, inspection, and maintenance.

(Refer to Figure 32.) What kind of antenna is this?. A lightning detector system antenna. A marker beacon receiver antenna. A radar beacon transponder antenna.

(Refer to Figure 22.) What kind of antenna is this?. This is a glide slope antenna. This is a DME or a radar beacon transponder. This is a loop and sense antenna.

When an antenna is installed, it should be fastened. to the primary structure at the approximate intersection of the three aircraft axes. with a reinforcing doubler on each side of the aircraft skin. so that loads imposed are transmitted to the aircraft structure.

The preferred location of an ELT is. as far forward as possible but aft of the firewall. at the lowest point possible in the fuselage. as far aft as possible but forward of the empennage.

How much clearance from the seat bottom is required when installing radio equipment under a seat?. 3 inches with the seat unoccupied. No set minimum as long as the equipment receives adequate cooling and damage protection. 1 inch with the seat occupied and subjected to maximum downward seat spring deflection.

Radio equipment is bonded to the aircraft in order to. provide a low-impedance ground. minimize radio interference from static electrical charges. provide a low-impedance ground and minimize radio interference from static electrical charges.

When testing a 406 MHz emergency locator transmitter (ELT),. testing inside of a metal hangar will prevent detection of an emergency ELT signal. the unit sends a test signal that will not generate an emergency signal. care must be taken as the unit could send an emergency signal, activating search and rescue (SAR) agencies.

When operationally checking an autopilot system on the ground, after the aircraft's main power has been switched on, the autopilot should be engaged. only after the gyros come up to speed and the amplifier warms up. whenever the operator desires. for only a few minutes at a time.

The elevator channel of an autopilot controls the aircraft about which axis of rotation?. Roll. Longitudinal. Lateral.

(Refer to Figure 16.) Which of the antennas shown is a typical glideslope antenna?. 2. 3. 4.

(Refer to Figure 27.) What kind of antenna is this?. A glide slope antenna. A VOR and localizer antenna. A radar beacon transponder antenna.

How may the battery replacement date be verified for an emergency locator transmitter (ELT)?. By removing the batteries and testing them under a measured load to determine if 50 percent of the useful life remains. By observing the battery replacement date marked on the outside of the transmitter. By activating the transmitter and measuring the signal strength.

What is the operating principle of the sensing device used in an autopilot system?. The reaction of the force 90° away from the applied force in the direction of gyro rotation. The relative motion between a gyro and its supporting system. The rate of change of motion between the gyro gimbal rings and the aircraft.