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Principles of Broadcast Technologies Lesson 1

Principles of Broadcast Technologies Lesson 1. Bellevue Community College Bob Young, Instructor. 1a. Electricity. Voltage Current Resistance Power Formulas. 1b. Electricity. Voltmeter Ammeter Ohmmeter Multimeter Wattmeter. 2a. Components. Resistor Capacitor Inductor

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Principles of Broadcast Technologies Lesson 1

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  1. Principles of Broadcast TechnologiesLesson 1 Bellevue Community College Bob Young, Instructor

  2. 1a. Electricity • Voltage • Current • Resistance • Power • Formulas

  3. 1b. Electricity • Voltmeter • Ammeter • Ohmmeter • Multimeter • Wattmeter

  4. 2a. Components • Resistor • Capacitor • Inductor • Diode (P-N junctions)

  5. 2b. Components • Resonant (LC) Circuits • Regenerative Feedback • Sine Wave • Phase Relationships

  6. 3a. Radio Wave / RF Energy • FCC Frequency Allocations • Radiation • Propagation • Path Loss (distance factors) • Path Loss (environmental factors)

  7. 3b. Radio Wave / RF Energy • Fading (multipath) • Fading (Rayleigh) • Fresnel Zone • Wavelength • Diversity Receivers

  8. 4. Decibels • Power • Voltage • RF Applications • Audio Applications

  9. 5a. Modulation • Carrier (definition) • Information (definition) • Analog Modulation • Amplitude Modulation (AM) • Frequency Modulation (FM) • Pulse Modulation (PM) (ICW)

  10. 5b. Amplitude Modulation

  11. 5c. Modulation • Digital Modulation • Frequency Shift Keying (FSK) • Phase Shift Keying (PSK) • Amplitude Shift Keying (ASK)

  12. 6. Transmitter • Audio Processor • Modulator • RF Amplifier

  13. 7a. Receiver • RF Amplifier (terminology note: misuse of term, “pre-amplifier”) • Demodulator (Detector, Discriminator) • Audio Processor • Pre-emphasis and De-emphasis

  14. 7b. AM Receiver

  15. 8a. Interference • Types of Interference • Co-channel • Adjacent Channel • Intermodulation

  16. 8b. Interference • Receiver Solutions to Interference • Superheterodyne Receivers • Image Frequency • Dual Conversion Superheterodyne Receivers

  17. 8c. Interference • Cavity and Filter Solutions to Interference • Bandpass Cavities • High Pass Filters • Low Pass Filters • Block Filters • Notch Reject Filters • LC Filters • Crystal Filters

  18. 9. Antennas • Types • Polarization • Bandwidth • Gain

  19. 10. Transmission Line • Types • Loss Characteristics • Bending Radius • Pressurized Transmission Line

  20. 10a. Other Devices • Transmitter Combiner • Receiver Multicoupler • Splitter • Duplexer • Leaky Coax • Bi-directional Amplifier (BDA) • Isolator

  21. 11a. Applications & Principles • Broadcast Radio • Television • Microwave Networks • Satellite Communications

  22. 11b. Applications & Principles • RADAR • Wireless LAN, 802.11 • Trunked Radio Systems • Wireless Data and Internet • Telemetry

  23. 12. Careers • Job Types and Titles • Companies That Need You • Job Search Resources

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