Preamp Box with 2N5109

incl. VAT, plus shipping €83.19

In stock, shipped in 1 to 2 days


Top Features

  • Covers the complete shortwave spectrum (0.1 - 30 MHz)
  • Power supply (DC 12 - 15 V) direct or via coax
  • Gain 0 - 18 dB adjustable
  • High output power up to 26 dBm
  • High quality relays with 2 parallel contacts
  • Connectors: PL sockets

Supply Scope

  • Preamp Box

Technical description RXA Box

This RX preamplifier module for shortwave reception with 2N5109 transistor is based on the W7IUV design. It can be used as a preamplifier for RX antennas (Beverage, DHDL, Flag etc.). The gain is up to 18 dB, a variable attenuator (ATT) is built in, so the gain can be adjusted exactly as needed. In addition, the proper transistor bias voltage can be selected with a multi-turn potentiometer. Two relays provide bypass switching when no supply voltage is applied.

Power (DC 12 - 15 V) can be supplied by an external power supply or the "bias tee box" via coaxial cable.

This item is also available as a kit (all necessary components, PCB, housing).

Application description RXA Box

The preamplifier is designed for receive antennas (i.e.: no transmit operation allowed!). It can be used as buffer or driver amplifier.
The protection class IP56 allows outdoor operation. 
Technical Data
Product Name RXA Box
Amplification (dB) 18
Impedance (Ω) 50 Ω, 75 Ω
Supported Bands 160m, 80m, 60m, 40m, 30m, 20m, 17m, 15m, 12m, 11m, 10m
Current Intake (A) 0.180
Supply Voltage [V] 12 - 15 V
Color White
Frequency Range 0.1 - 30 MHz
Connector A PL Socket
Connector B PL Socket
Size W x H x D 100 x 100
Preamp Box with 2N5109
Preamp Box with 2N5109

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incl. VAT, plus shipping €83.19

In stock, shipped in 1 to 2 days

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