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Posts tagged QRP

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Tutorial on Printed Circuit Board Design

Tutorial on Printed Circuit Board Design Printed Circuit Board (PCB) is a component made of one or more layers of insulating material with electrical conductors and perfection in the work required if expecting good results. Currently the main generic standards for the design of a printed circuit board, clean, neat, really tested the results. Is […]

Mini Audio amp circuit

Mini Audio amp circuit using MC34119

Circuit of 2m Linear Amplifier 144MHz 45W

Circuit of 2m Linear Amplifier 144MHz 45W using SC-1022

Video Signal Amplifier circuit diagram

Video Signal Amplifier circuit diagram This electronic circuit is a video signal amplifier that offers a broad band amplifier with a bandwidth of 5 MHz which will take the video signals from your VCR and will amplify them sufficiently to drive up to 3 monitors, TV sets (provided that they can accept direct video signals), […]

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