SSB-Electronic GmbH 1014

Description:

The LNA 30 is a broadband amplifier for applications in the frequency ranges VLF, LF, MW and HF. Signals above 30 MHz are strongly suppressed by a low pass at the input of the amplifier. The MMIC used enables a low noise figure with high large signal strength. This amplifier is supplied with 12 to 24 V voltage via the UHF socket. Alternatively, the device can be powered by a 24 V battery. The highest large signal strength is achieved with a 24 V voltage supply and the smallest noise figure at 12 V. Only linear power supplies are recommended for the voltage supply of the LNA 30. Switching power supplies generate a large
interference level in the low frequency ranges and are not suitable for this application.

Assembly:

Attach the amplifier near the receiving antenna using the clamps provided. The sockets must be aligned downwards after assembly. Connect the amplifier input ("ANT" socket) to the antenna using a coax cable. If the antenna used does not have a 50 ohm impedance, an antenna matching device should be
connected between the antenna and the 50 ohm cable leading to the input of the amplifier. Then connect the coaxial cable going to the receiver to the "TRX" socket. The amplifier is powered via the UHF socket. A shielded cable should be used for this. The inner conductor of the supply cable is connected to the plus (+) pole, the shield to the minus (-) pole. This cable is connected to the UHF socket of the preamplifier via a commercially available UHF plug.

Technical Data:

• Frequency Range: 5 kHz – 30 MHz 
• Gain / Noise Figure with a 24 V power supply:
  
  
  • at 10 MHz 21 / 1,8 dB
  • at 15 MHz 20 / 1,7 dB
  • at 20 MHz 19 / 2,1 dB
  • at 30 MHz 19 / 2,2 dB
    
    
• OIP3: 38 dBm
• Connection Norm: N - socket
• DC Input: UHF - socket
• Operating Voltage: 12 - 24 V
• Current Consumption: ca. 150 mA
• Mast Diameter: max. 58 mm