Faq; The Transmission Distance Is Not Ideal; Module Is Easily Damaged - Ebyte E83-2G4M03S User Manual

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covered with ground copper (all copper). And well grounded), it must be close to the digital part
of the module and routed on the Bottom Layer;
 Assuming that the module is soldered or placed on the Top Layer, it is also wrong to arbitrarily
route wires on the Bottom Layer or other layers, which will affect the stray and receiving
sensitivity of the module to varying degrees;
 Assuming that there are devices with large electromagnetic interference around the module, it
will also greatly affect the performance of the module. It is recommended to stay away from the
module according to the intensity of the interference. If the situation allows, appropriate
isolation and shielding can be done;
 Assuming that there are traces with large electromagnetic interference around the module
(high-frequency digital, high-frequency analog, power traces), it will also greatly affect the
performance of the module. It is recommended to stay away from the module according to the
intensity of the interference. isolation and shielding;
 If the communication line uses 5V level, a 1k-5.1k resistor must be connected in series (not
recommended, there is still a risk of damage);
 Try to stay away from some TTL protocols whose physical layer is also 2.4GHz, for example:
USB3.0;
 The antenna installation structure has a great influence on the performance of the module. Make
sure that the antenna is exposed, preferably vertically upward. When the module is installed
inside the casing, a high-quality antenna extension cable can be used to extend the antenna to the
outside of the casing;
The antenna must not be installed inside the metal shell, which will greatly reduce the

transmission distance.

6 FAQ

6.1 The transmission distance is not ideal

When there is a straight-line communication obstacle, the communication distance will be correspondingly

attenuated;
Temperature, humidity, and co-channel interference will increase the communication packet loss rate;

The ground absorbs and reflects radio waves, and the test effect close to the ground is poor;

Seawater has a strong ability to absorb radio waves, so the seaside test effect is poor;

If there is a metal object near the antenna, or placed in a metal shell, the signal attenuation will be very serious;

The power register is set incorrectly, and the air rate is set too high (the higher the air rate, the closer the distance);

The low voltage of the power supply at room temperature is lower than the recommended value, and the lower the

voltage, the lower the output power;
The antenna and the module are poorly matched or the quality of the antenna itself is a problem.


6.2 Module is easily damaged

Please check the power supply to ensure that it is between the recommended supply voltages, if exceeding the

maximum value will cause permanent damage to the module;
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E83-2G4M03S User Manual
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