Bens Final Study Guide

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Bens Final Study Guide

  1. 1. Ben’s final study guide:<br />Frequency: I cycle per second, 1 kilo, 1 hert<br />Frequency bands: <br />-Low frequency: below 300 hz – lf/mf communications<br />-medium frequency: 300-3000 khz – commercial AM 535-1605 khz<br />-high frequency: 3-30 mhz – HF communications 2-25 mhz<br />-ultra high frequency: 300-3000 mhz – transponder and dme 960-1215 mhz<br />-super high frequency: 3000 mhz and up – radar 220-5200 mhz<br />-Very high frequency: 30-3000 mhz<br />*higher the frequency, the farther away it can be detected<br />Be familiar with electromagnetic spectrum<br />AM: Amplitude modulated FM: Frequency modulation<br />Transmitter receiver: send out message as electromagnetic pulse with modulation to distinguish from a hum steady noise<br />Static electricity: interferes with magnetic flight controls and navigation/radio equipment. Faster the aircraft travels, the more static buildup it acquires.<br /> Static wicks allow static charge to drain off.<br />VHF: omni directional range<br />CDI should center<br />ADF: automatic direction finder<br />NBD: non directional beacon, low to medium frequency<br />ANT: antenna functions<br />Direction of needle: direction of station<br />Tail of needle: direction from station<br />Magnetic bearing + relative bearing= magnetic bearing<br />Advanced navigation: VORTAC<br />LORAN: Long Range Navigation<br />-Low frequency range<br />-follow contours of the earth, long range chain<br />-weather can affect signal<br />-foilage, season, terrain can affect signal<br />GPS: Global Positioning System, uses triangulation of distance, 3 position satellites to work<br />HSI: Horizontal Situation Indicator, heading and VOR indicating combo<br />Feet/mile: 6000 ft. per nautical mile<br />AC wave: 60 cycles/ second<br />Communication radios: 118 mhz to 133 mhz<br />121.5 = emergency signal<br />Carrier wave does not have to take any voice data with it<br />Communication radios: controlled by FCC<br />2 way radio: transceiver can receive and transmit signals<br /> ELT: emergency locater transmitter, transmitted on 121.5 mhz, changed in march 2009.<br />ADF receives signals from 199 to 1799 khz<br />Units can directly receive from sense antenna<br />LF/MF band is full of atmospheric and manmade noise<br />Crosswind can cause navigation difficulty<br />ILS: instrument landing system, precision approach, most accurate, lowest visibility<br />I apologize for the terrible organization skills I have. So other than what’s on here and look over the corresponding avionics chapter in your airframe study book. Sorry again (fuck, fuck, shit fuck). <br />

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