The MH648A is a pre-amplifier for improving sensitivity in instruments such as spectrum analyzers, field strength meters, and frequency counters.

• Maximum output
  • ≥120 dBμV (+7 dBm)
• Input attenuator
  • 0, 10, 20, 30 dB ±1.5 dB
• Input/Output connector
  • 50 Ω
  • VSWR: ≤2.5 (0.5 to 800 MHz)
  • N (S)-type connector
• Power supply
  • AC: 100 V, 50/60 Hz, ≤10 VA
    註意事項：2016年4月以後出貨的產品僅支援交流電源，不支援直流電源(+21 to +30 V, ≤120 mA) 。
• Operating temperature range
  • 0˚ to 45˚C
• Dimensions
  • 210 (W) x 95 (H) x 200 (D) mm
• Weight
  • ≤3.5 kg