问题：
Is the YBT250 accurate enough to set the frequency of my Base Station (BTS)?
答案：
The NetTek is accurate to 0.5 ppm without a GPS, or 0.015ppm with a GPS.
At 2 GHz, without a GPS, this translates to 2000 * 0.5 = 1000 Hz error.
With a GPS, it's 2000 * 0.015 = 30 Hz.
A BTS needs to be accurate to 0.05 ppm, or 100 Hz at 2 GHz.
The NetTek requires a YBGPS1 to accurately make this measurement at the carrier frequency.
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常见问题 ID 55876
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