兆赫
2.The Relation Between the Sunspots Number and the Solar Radio Emission in the Frequency Range 1000 MHz ≤ f ≤ 9400 MHz
6."The RF Vector Voltmeter-An Important New Instrument for Amplitude and Phase Measurements from 1 MHz to 1000 MHz"
9.The device uses PbMoO4 as the acous-to-optic medium with central frequency of 100MHz, criterion dot number N=12,3dB bandwidth 40MHz, and modulation repeat ratio per channel of better than 0.5MHz.
