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2.4 GHz Spectrum Overview

GLX-D operates within the 2.4GHz ISM band which is utilized by Wi-Fi, Bluetooth, and other wireless devices. The benefit of 2.4GHz is that it’s a global band that can be

used anywhere in the world, license free.

Overcoming the Challenges of

2.4GHz

The challenge of 2.4GHz is that Wi-Fi traffic can be

unpredictable. GLX-D meets these challenges in the

following ways:

• Prioritizes and transmits on the best 3 frequencies

per channel (choosing from a pool of 6 frequencies

across the 2.4GHz band)

• Repeats the most important information such that

one frequency can be taken out entirely without

audio interruption

• Continuously scans during usage to rank all fre-

quencies (both current and backup frequencies)

• Seamlessly moves away from interference to back-

up frequencies without audio interruption

Coexisting with Wi-Fi

If you plan to use Wi-Fi during a performance, turn on

Wi-Fi devices prior to turning on GLX-D and scanning

for the best channel. GLX-D detects and avoids other

Wi-Fi traffic by scanning the entire 2.4GHz environ-

ment and selecting the 3 best frequencies to transmit

on. The result of this is reliable performance for your

GLX-D wireless system as well as avoiding Wi-Fi trans-

missions which may be important as well.
“Bursting” Wi-Fi is harder to detect as it is periodic;

however, because GLX-D repeats the most important

information, even bursts at very high-levels don’t have

an effect on your audio performance.

Challenging Wireless

Environments

Some environments are more difficult than others for

2.4 GHz wireless system performance. Additionally,

body absorption has a greater impact in the 2.4 GHz

spectrum, compared to the UHF spectrum. The sim-

plest solution in many cases is to reduce the transmit-

ter to receiver distance such as placing the receivers

on the stage with a clear line of sight.
Challenging environments include:

• Areas with few reflective surfaces such as:

- Outdoors

- Buildings with very high ceilings

•  3 or more GLX-D receivers in use
•  Strong Wi-Fi presence
•  Competitive 2.4 GHz systems in use

Note: Unlike analog TV band wireless which typically uses the same type of transmissions across manufacturers, all 2.4GHz wireless currently on the market use different

variations of wireless transmission. These differences make it more difficult to mix and match 2.4 GHz from multiple manufacturers successfully, as can be done with TV band

wireless solutions.

Tips and Methods to Improve Wireless System Performance

If you encounter interference or dropouts, try the following suggestions:

• Scan for the best available channel (press the channel button)
• Reduce transmitter to receiver distance - for example, place receivers on stage

with a line of sight to the receiver.

• Change the group for all GLX-D systems:

- Single-Chanel System: use Group 4, which is optimized for single-channel use

- Multi-Channel System: use Group 2, which is the most robust wireless group

• Keep transmitters more than 2 meters (6 feet) apart

Note:

GLX-D transmitters closer than 6 inches (15 cm) to other non-GLX-D trans-

mitters may cause audible noise in that transmitter