1. Frequency range: 930~960 MHz 2. Maximum output power: 39dBm 3. Maximum gain: 58± dB 4. Gain adjustment range: ≥30dB 5. Gain control steps: 1 dB 6. Nondestructive power input: +10dBm 7. Frequency Error: ≤±5χ10-8 8. Fluctuation band: ≤1.4dB 9. Noise factor: ≤8dB(Gain biggest test) 10. Delay: ≤4uS 11. Step frequency interval: 50 KHz 12. VSWR ≤1.4 13. Waveform Quality: ≥0.95 14. Working voltage:DC+26V±10%, Current less than 3.5A 15. Work temperature: -25oC~+60oC 16. Work humidity: ≤95%( Noncondensing)