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Separation of Sleek 4G and the Outside Antenna is very important. In a vehicle, the metal roof acts as 

a barrier and helps shield the two antennas from each other, preventing oscillation (feedback) .

Oscillation can occur when the roof mounted antenna is too close to the Sleek 4G inside the vehicle .  An 

oscillation (or feedback) in the Sleek 4G is similar to when a microphone is too close to a speaker in sound 

system, resulting in a loud whistle .  An oscillation in the Sleek 4G, if allowed to occur, can affect nearby cell 

towers’ ability to handle calls .

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 SYMPTOM:

If the light is amber, the Sleek 4G has powered down to protect the cell tower from oscillation . See 

section above “Separation of Sleek and the Outside Antenna is very important .”  The amber light 

indicates the outside roof mounted antenna needs to be farther apart from the Sleek 4G .  In a vehicle 

installation, move the Outside Antenna on the roof of the car farther to the rear of the car, but at least 

6 inches from the rear and side windows or sunroof .  To reset the Sleek 4G, disconnect and reconnect 

the power supply .  If the light is now green, the Sleek 4G is working properly . If the amber light is still 

on, move the Outside Antenna farther away and repeat the process .

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The Sleek 4G has oscillation protection – which means the Signal Booster powers down to protect the 

cell tower . See section above “Separation of Sleek and the Outside Antenna is very important .”  The 

RED light indicates the outside roof mounted antenna needs to be farther apart from the Sleek 4G .  In 

a vehicle installation, move the Outside Antenna on the roof of the car farther to the rear of the car, but 

at least 6 inches from the rear and side windows or sunroof .  To reset the Sleek 4G, disconnect and 

reconnect the power supply .  If the light is now green, the Sleek 4G is working properly . If the RED 

light is still on, move the Outside Antenna farther away and repeat the process .

Sleek Arm

Sleek Arm

multiple arm slots

for custom fit

Sleek Arm

Sleek Arm

Included with your Sleek 4G are various sized arms, which 

will provide you with multiple options to customize the Sleek 

to fit your phone.
Note: Figures 3 & 4 indicate slots used for adjustable arms.

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