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Optional high IP3 preamplifier module

Small low noise preamplifier module with 2SC5551 transistor.

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Description

This is small low noise preamplifier module with 2SC5551 transistor based on W7IUV design. You can use it as high IP preamplifier for RX antennas, buffer amplifier or small driver in your own design. You can download KiCAD library and simply add it to your magic hardware :) There is classic diode limiter at the input. Gain is up to 18 dB  and there is also built in variable ATT. You can set gain as high as you need! Amplifier has got low noise - lower than 2 dB up to 50 MHz and around 2.2 dB at 150 MHz. Transistor bias could be set by the multi-turn potentiometer. Two relays offer bypass switching if there is no DC voltage.


Using

  • Designed to be built-in your own hardware
  • High IP, Low Noise RX preamplifier - RX antennas
  • Buffer amplifier
  • Driver amplifier

Main functions

  • Broadband: 0.1 MHz to 60 MHz (11 dB @ 150 MHz)
  • Very high IP3
  • Good gain up to 18 dB
  • Low Noise Figure (NF) 1.2 to 2 dB (2.5 dB @ 150 MHz)
  • High output power up to 26 dBm
  • Variable ATT for gain 0 to 18 dB
  • Bypass relays
  • You can set transistor bias as you need by trimmer
  • High quality relays with TWO contact parallel
  • Pin header 2.54mm 20 mm long
  • Two mounting holes M3
  • Two mounting spacer bolds M3x20mm long included
  • PCB size 50x50.4 mm
  • ASSEMBLED and TESTED VERSION

Parameters

  • NPN transistor 2SC5551A
  • Supply voltage 12 - 14 V
  • BIAS current 10 to 70 mA
  • Supply current up to 180 mA include relays!
  • Gain up to 18 dB
  • Low Noise Figure (NF) 1.2 dB (20 mA 50 MHz)
  • Low Noise Figure (NF) < 2 dB (60 mA 50 MHz)
  • Low Noise Figure (NF) 2.3 dB (20 mA 150 MHz)
  • REAL IP3 34 dBm

Available as

ASSEMBLED: ready to use

Manual

If you want to know more please check our wiki with Optional Preamp module manual.



optional preamp module assembled by qro.cz hamparts.shop





optional preamplifier 2sc5551 table by qro.cz hamparts.shop



Example of the implementation in own design

example of implementation optional preamplifier module by qro.cz hamparts.shop



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Product Details

Data sheet

type
ASSEMBLED
design
pcb module
usage
RX
impedance
both 50 & 75 Ohm
front-end protection
input
frequency range
0.1 MHz to 60 MHz
Attachments
optional preamp module
KiCAD library for optional preamp module
Download (548.26KB)
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