While collecting information during on-site survey in WLAN network planning project, which of the following are interference sources? (Multiple choice)

Question

Options

• AMicrowave oven
• BOther manufacturers' Wi-Fi
• CMobile hotspot
• DBluetooth

• A
  100% (24)

Explanation

All four options are valid RF interference sources encountered during on-site WLAN surveys because they all operate in the 2.4 GHz ISM band (and in some cases 5 GHz), which directly overlaps with Wi-Fi frequencies. Microwave ovens (A) emit broadband 2.4 GHz radiation when in use, causing significant packet loss and retransmissions nearby. Other manufacturers' Wi-Fi (B) and mobile hotspots (C) create co-channel and adjacent-channel interference - they're essentially competing APs consuming airtime on the same spectrum, regardless of brand or whether they use cellular backhaul. Bluetooth (D) also uses 2.4 GHz with frequency hopping, which clashes with 2.4 GHz Wi-Fi channels and degrades throughput.

Memory tip: Think "anything that shares the 2.4 GHz airspace is a suspect." During a site survey, if a device communicates wirelessly near your band - ovens, other Wi-Fi, hotspots, Bluetooth headsets - it belongs on your interference checklist.

No community discussion yet for this question.