Hamshop.cz

This is preamplifier module with 2N5109 transistor based on W7IUV design. You can use it as high IP preamplifier, buffer amplifier or small driver.
Gain is up to 18dB and there is also build in variable ATT. You can set gain as high as you need!
As well you can set right transistor bias with multi turn potentiometer. Two relays offer bypass switching if there is no power supply. 
 

Main functions:

• Info:
  • Broadband: 0.1 MHz to 60 MHz
  • Very high IP3
  • Good gain up to 18 dB
  • High output power up to 26 dBm
  • Variable ATT for gain 0 to 18dB
  • Bypass relays
• You can set transistor bias as you need by trimmer
• High quality relays with TWO contact parallel
• SMA connectors
• PCB size 50x50 mm

Parameters

• Supply voltage 12 - 14 V
• Supply current up to 180 mA including relays!
• Gain: up to 18 dB 
• REAL IP3 37 dBm for 18 V / 90 mA