On the hunt, fishing, in the campaign, at work, as a radionan or just to communicate with friends ... And this is not the entire list where the radio will be as if the way. It is worth saying that it is easy to make it, but some knowledge in the field of physics and electronics still needs to be posted.
And of course, the power supply, a soldering iron, a desire and some patience.
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The presented scheme is considered one of the most elementary. Here is A1 - antenna, SA 1 - switch, and SA2 switch.
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The next step is to wind the coils on the frame. In one winding about 200 turns.
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Position the parts on the board, according to the shown scheme. The generator is necessarily insulated with the screen that is connected to "+". Mark the location of each detail is better in advance. A housing for your radio can be any plastic or tin box. You can use an old broken phone, but you have to pick up a compact battery. The power source can be anything outstanding 5-12 V.
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No less important stage - debugging. Setting the signal reception. Always performed with an extended antenna, to which you should not touch your hands. At first, R10 is changed to a variable resistor 33-47 com and are waiting when the noise will reach the greatest volume. Now, changing the inductance L5, try to improve the reception. Permanent resistor put in place. Voice distortion indicates a problem in resistors R1 B R3. They need to be replaced. For debugging of the generator and the antenna collect a wave. Below is a scheme.
Now you know how to make a walk. The main stages and important points of the assembly can be viewed on the video.
Share advice:"How to make a radio with your own hands"
The next step is to wind the coils on the frame. In one winding about 200 turns.
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correct the error in the scheme. may choke? It is not dv.T. Top 3-8.12. Do not mislead people. And all the radio amateurs raised. No one
throttle L4-L6-to 200 turns .. PEV-2 D-0.10 on the MLT-0.5 resistor winds. L1-L5 ... 8 turns ... Pav-2-0.5mm.l2-4Vike ... PEV-05; L3-4 + 4 ... PEV-0.5;