Detector Receiver

Head phones with high amont OMS(I buy on local market)

Ground(Сan take from eletcric plug)

ceramic capasitor 2200nf

varnished copper wire,need point therty-five diameter (ten мeters long)

General Purpose Transistor NPN

AA Batteries

TV antenna

sewer pipe forty мм diameter

<h3 >Detector receiver</h3><p >In this video, I describe with my funny cat MASHA how to make a detector receiver.</p><p >I don't have any result but its be interest. You need for it. Some things like headphones with high amont OMS are hard to buy.</p><p >You can take  any simpleple head phones with transistor instead.You see, the fundament of detector receiver is oscillatory circuit.</p><p >And we need to choose right number of ring in coil, and right antenna. I can't do it because I am a beginner. Here I describe how you can make it buzz.</p><p >Transistor needed to make the circuit sound louder.</p><p >I used a TV antenna becouse they have a stronger signal.</p><h3 >What we need?</h3><ul ><li >Ground (can take from eletcric plug)</li><li >Varnished copper wire, need point therty-five</li><li >Diameter (ten мeters long)&lt;/li&gt;</li><li >Sewer pipe forty мм diameter&lt;/li&gt;</li><li >Ceramic capasitor  two sosund and two hundred</li><li >Headphones with high amont OMS (I bought in local market)</li><li >Battery compartment for two AA bateries</li><li >Two AA bateries</li><li >Transistor PN2222A</li><li >TV antenna</li></ul><p >You can make a coil, but I did it and nothing hapen.</p><p >Then cut eletcric plug,</p><p >Isolate two cables,</p><p >yellow and(yellow and green) cable (it's important to make sure it's ground)</p><p >To ground, anttena add jumper wires with breadboard</p><p >Set the components like schematic. </p><p >As a result a lisen the zzzzz.</p><p >I use material from book borisov young radio hobbyist and YouTub channel YONG RU.</p><div class="se-component se-video-container __se__float-none" contenteditable="false" style="width: 100%;"><figure style="width: 100%; height: 56.25%; padding-bottom: 56.25%; margin: 0px;"><iframe frameborder="0" allowfullscreen="" src="https://www.youtube.com/embed/GDhmVoUeib8" data-proportion="true" data-percentage="100%,56.25%" data-size="100%,56.25%" data-align="none" style="width: 100%; height: 100%;" data-index="0" data-file-size="0" data-origin="100%,56.25%"></iframe></figure></div><p ></p>

Untitled file

Radio