RX preamp BOX with 2N5109 OK2ZAW

wiki order

This is very simply preamplifier BOX module with 2N5109 transistor based on W7IUV design. You can use it as high IP preamplifier for RX antennas (beverage, DHDL, flag etc). Gain is up to 18dB and there is also build in variable ATT. You can easy set the 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 voltage. You can use external power supply connected to the box or the bias tee box for power over the coax.

Main functions:

Parameters:

Use:

Versions:


The measured values


Gain 50 kHz to 1 MHz

Gain 1 MHz to 70 MHz

Input SWR, S11

parameters

Download

RX preamp BOX module with 2N5109
Schematic and board pic sch brd
Source files KiCAD30
We believe open source is a better way of doing things.
View and download the Shield Schematic and PCB files.
The hardware designs are released under the
Attribution-NonCommercial 2.0 Generic

Design & code ok1hra | Copyleft 2013-2019 | License