Ebyte E22-400M33S, User Manual

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E22-400M33S User Manual
10
5. Basic Applications
5.1 Basic Circuits
6. Frequently Asked Questions
6.1 Communication range is too short

The communication distance will be affected when obstacle exists.

Data lose rate will be affected by temperature, humidity and co-channel interference.

The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.

Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.

The signal will be affected when the antenna is near metal object or put in a metal case.

Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
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The power supply low voltage is lower than recommended under room temperature. The lower the voltage is, the
smaller the transmitting power is.

Due to antenna quality or poor matching between antenna and module.