Wireless site surveys and RF basics

Skills you'll practise

• Convert decibel changes to power ratios and calculate SNR
• Choose the right survey type (predictive, passive, active) for a job
• Read a coverage plot or walk-test table against design targets
• Plan channels and power to limit co-channel contention

Course outline

1. 1.Wireless site surveys and RF mathVideo · 2 min
2. 2.Decibels, signal and noiseLesson · 20 min
3. 3.Surveys and channel plansLesson · 20 min
4. 4.Band and channel choices: 2.4, 5 and 6 GHzLesson · 20 min
5. 5.Wireless site surveys and RF basics: knowledge checkKnowledge check · 19 questions
6. 6.Voice calls drop when people walk aroundScenario
7. 7.Final exam7 questions · passing it completes the course, so people who already know the material can test out

Sources it draws on

The lessons and questions are written from these references, so learners can go back to the original.

• IEEE 802.11-2020 (channels, DFS and fast BSS transition)
• CWNP: Certified Wireless Design Professional study guide (survey types and design targets)
• Vendor voice-over-Wi-Fi design guides (−67 dBm / 25 dB SNR guidance)