RADAR Electronics Technician — Information & Free Practice
US · Examination information
200 free questions · Answer explanations · No signup required
RADAR Electronics Technician
- Provider
- ETA® International
- Format
- Proctored knowledge examination, online through Trapeza or on paper; eligible non-hands-on remote examinations arranged by ETA through ExamRoom.AI.
- Exam questions
- Total questions: 50.
- Time limit
- 2 hours
- Passing score
- 75%
- Exam fee
- $80; remote proctoring adds $16 for a two-hour examination.
Examination outline
BLOCK DIAGRAMS & SCHEMATICS
- Basic RADAR transceiver block diagram
- Block diagrams versus schematics
- Expected signal levels, voltages and currents
- Divide and conquer troubleshooting
- Flow charts
- Major RADAR component interfaces
COMPONENTS
- Basic RADAR components
- Common electronic components
- Static-sensitive component precautions
- Antenna, drive and positioning components
- ATR and TR tubes
- RADAR display types
- Oscillators and timing circuits
CABLING AND ANTENNAS
- Wavelength and frequency calculations
- RG-6, RG-58 and RG-59 coaxial cables
- Fiber optics and telephone wiring
- Cable preparation and crimping
- Coaxial and twisted-pair splices
- Waveguides versus cables
- Waveguide cavity traps
- Signal and power level measurements
- Waveguide faults
- Locating shorts and opens
- Movable antenna mechanical hazards
- RADAR radiation hazards
HAND TOOLS & SOLDERING
- Hand tools, riveting and drilling
- Soldering techniques
- Leaded solder and fume precautions
- Solder removal tools
- Solder defects and circuit damage
- Soldering flux
MATHEMATICS
- Electronic algebraic formulas
- Scientific calculators
- Component and wiring color codes
- Decimal, binary, octal and hexadecimal conversions
- RADAR MILE and pulse timing distances
AMPLIFIERS
- RADAR amplifier purposes
- Amplifier types and bandwidth
- High-power amplifier precautions
- Operational amplifier diagram
- Op-amp gain measurement
- High-pass, low-pass and band-pass op-amps
- Input/output measurements and gain expression
- Gain adjustment
- Amplifier test equipment
RADAR TRANSCEIVERS
- Radio-frequency electromagnetic propagation
- Transceiver block diagram
- Transceiver voltage levels
- Expected transceiver signals and test values
- Transmitter high-voltage hazards
- Antenna motion and positioning circuits
- Transceiver power supply components
- Transceiver power requirements
- Transmitter radiation hazards
INTERFACING
- Interface port and connector signal levels
- Interconnection shorts and opens
- Wiring dressing and securing
SATELLITE, WIRELESS, AND DATA COMMUNICATIONS
- Earth-orbit satellite communications
- Satellite orbital positioning
- Satellite frequencies and mutual interference
- Uplink/downlink power dispersion
- GPS and RADAR
- Other wireless communications and wireless LANs
- WAN and LAN data communications
- Mapping, transits, aircraft radar, imaging and GPS
- Data communication modulation
COMPUTERS AND DIGITAL CONCEPTS
- Basic computer
- Recording and retaining RADAR imagery
- Digital gates and truth tables
- Computer chips, boards, memory and controls
- Exchanging major computer components
SOFTWARE—PROGRAMMING
- Database, spreadsheet, calculator, graphics and word processing software
- Software installation
- Hardware installation
- Diagnostic software for troubleshooting
- Virus detection and utilities
TROUBLESHOOTING
- Common electronic test equipment
- Non-destructive testing
- Tagging power sources and transmitters
- RADAR fault diagnosis sequence
- Component repair, section replacement or unit replacement
- Position-specific record keeping
- Static buildup and grounding
- Careful transistor and IC measurements
- Intermittent circuit-board faults
- Safety with workers in close proximity
- Discharging capacitors and kinescope high voltage
- Workshop neatness and cleanliness
- Parts cross-referencing and replacement ordering
PEOPLE RELATIONS
- ETA Customer Service Specialist program
- Unsafe behavior and workplace teamwork
- Hygiene and appearance
- Telephone practices and relations
- Company costs and service billing
Examination sources
- RAD Competency Requirements
PDF p.1 / title and scope introduction; complete competency pp.1-4
- ETA Communications Certifications
Prepare For An Exam / competency adoption; RAD panel Competencies - What's covered? link to comps/RAD_comps.html
- RAD Competency official viewer
RAD Competency body heading and download instructions; PDF embed points to https://www.etai.org/comps/RAD_comps.pdf
- RAD Competency Requirements
PDF p.3 / end of competency list; p.4 suggested materials reviewed separately
- ETA Communications Certifications
RAD Exam Info / complete table
- ETA Test Sites
Taking an ETA Examination / steps 6-7
- ETA Test Sites
Taking an ETA Examination / steps 3-4
- ETA Test Sites
Remote Proctoring / eligibility and registration
- ETA Test Sites
Remote Proctoring / ETA setup and scheduling notice
- ETA Test Sites
Remote Proctoring / additional fee notice
Related license preparation
This examination may be required or accepted as an alternative, depending on the license and application pathway.