Analog Microwave Transmission Systems

Course Length: 3 to 4 Days

Prerequisites:

A fundamental understanding of telecommunications transmission principles will be useful for students taking this course. This course can be customized or combined to meet specific system requirements.

Course Objectives:

This course is for technical trainees and other employees who require training on analog microwave radio and associated multiplex equipment. The first two days will cover math fundamentals for analog circuits, DTL7300 mux, basebands and HF baseband testing. The last two days are devoted to analog microwave radio fundamentals. This curriculum will include FM Fundamentals, testing analog basebands at the radio, radio operation, FCC requirements and maintenance procedures.

Each subject will include approximately 50 % hands-on exercises for the students and a review examination at the end of the week.

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Course Outline:

    Analog Circuits

  • Definition of Bandwidth
  • Analog Math Fundamentals
  • 2W/4W Circuits
  • Signaling Fundamentals
  • E & M Signaling
  • 3825 Out Of Band
  • 2600 SF
  • Cross Talk and Intermodulation
  • Interfering Carriers
  • Analog test equipment - hands-on

    • Analog Multiplexers

  • Introduction to Frequency Division Multiplexing
  • VF channels
  • Termination units
  • DTL 7300 mux circuit layout
  • Channel set-up
  • E & M Signaling
  • Hand-on exercises
  • Wiring standards and blocks
  • Circuit wiring diagrams
  • Preventive maintenance procedures

    • High Frequency and Basebands

  • Building the HF baseband
  • Baseband components
  • Baseband terminations
  • Baseband measurements
  • Block & level diagrams
  • Baseband measurements
  • Hands-on exercises

    Analog Microwave Radio

  • FM Fundamentals
  • FM Microwave block & levels
  • Making connections to the radio
  • Power
  • Antenna
  • Baseband
  • Pre & De-emphasis in FM radios
  • Understanding Signal to Noise - S/N
  • Radio alarms & pilots

    • Analog transmitters - hands-on

  • Transmitter components
  • First Bessel drop-out
  • Testing power & frequency
  • Testing carrier purity
  • Preventive Maintenance
  • FCC reporting

    • Analog Receivers - hands-on

  • Receiver components
  • Measuring – RSL
  • Measuring noise & Intermodulation
  • Understanding threshold extension
  • Measuring and setting squelch
  • Creating and interpreting AGC
  • Combining analog receivers
  • Setting receiver alarms

    • Antenna Coupling

  • Antenna coupling devices
  • Antenna cross-couplers
  • Stack attenuators
  • Antenna connectors
  • Safety requirements