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Non Wi-Fi
Interferer
Description
Bluetooth Any device that uses the Bluetooth protocol to communicate in the 2.4 GHz band is classified
as a
Bluetooth
device. Bluetooth uses a frequency hopping protocol.
Fixed
Frequency
(Audio)
Some audio devices such as wireless speakers and microphones also use fixed frequency
to continuously transmit audio. These devices are classified as
Fixed Frequency (Audio)
.
Fixed
Frequency
(Cordless
Phones)
Some cordless phones use a fixed frequency to transmit data (much like the fixed frequency
video devices). These devices are classified as Fixed Frequency (Cordless Phones).
Fixed
Frequency
(Video)
Video transmitters that continuously transmit video on a single frequency are classified as
Fixed Frequency (Video)
. These devices typically have close to a 100% duty cycle. These
types of devices may be used for video surveillance, TV or other video distribution, and
similar applications.
Fixed
Frequency
(Other)
All other fixed frequency devices that do not fall into one of the above categories are
classified as
Fixed Frequency (Other)
).
Note that the RF signatures of the fixed frequency audio, video and cordless phone devices
are very similar and that some of these devices may be occasionally classified as Fixed
Frequency (Other).
Frequency
Hopper
(Cordless Base)
Frequency hopping cordless phone base units transmit periodic beacon-like frames at all
times. When the handsets are not transmitting (i.e., no active phone calls), the cordless base
is classified as Frequency Hopper (Cordless Bas).
Frequency
Hopper
(Cordless
Network)
When there is an active phone call and one or more handsets are part of the phone
conversation, the device is classified as
Frequency Hopper (Cordless Network)
. Cordless
phones may operate in 2.4 GHz or 5 GHz bands. Some phones use both 2.4 GHz and 5 GHz
bands (for example, 5 GHz for Base-to-handset and 2.4 GHz for Handset-to-base). These
phones may be classified as unique Frequency Hopper devices on both bands.
Frequency
Hopper (Xbox)
The Microsoft Xbox device uses a frequency hopping protocol in the 2.4 GHz band. These
devices are classified as
Frequency Hopper (Xbox)
.
Frequency
Hopper (Other)
When the classifier detects a frequency hopper that does not fall into one of the above
categories, it is classified as
Frequency Hopper (Other)
. Some examples include IEEE
802.11 FHSS devices, game consoles and cordless/hands-free devices that do not use one
of the known cordless phone protocols.
Microwave Common residential microwave ovens with a single magnetron are classified as a
Microwave
. These types of microwave ovens may be used in cafeterias, break rooms,
dormitories and similar environments. Some industrial, healthcare or manufacturing
environments may also have other equipment that behave like a microwave and may also
be classified as a Microwave device.
Microwave
(Inverter)
Some newer-model microwave ovens have the inverter technology to control the power
output and these microwave ovens may have a duty cycle close to 100%. These microwave
ovens are classified as
Microwave (Inverter)
. Dual-magnetron industrial microwave ovens
with higher duty cycle may also be classified as Microwave (Inverter). There may be other
equipment that behaves like inverter microwaves in some industrial, healthcare or
manufacturing environments. Those devices may also be classified as Microwave (Inverter).
Table 35:
Non Wi-Fi Interferer Types
AOS-W Instant 6.3.1.1-4.0 | User Guide Spectrum Monitor | 205
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