In one design, a first (e. g., lower power) mode may be selected for the SPS receiver if the transmitter output power level is below a switch point.
在一种设计中，如果发射机输出功率电平低于切换点则可为SPS接收机选择第一(例如，低功率)模式。
The receive system must have high G/T performance. When the receiver operates under low temperature, the receive system temperature will be significantly reduced.
接收设备工作在低温环境下，能够有效降低接收 系统的噪声温度，提高系统G/T值。
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