How do radio improvised ?

How do radio improvised ?
You will need:
  • Transistors
  • Resistors
  • Capacitors
  • antenna, microphone, speaker
  • Switch, switch, DC power
  • Two board PCB
# 1

Transistors we need seven pieces: three copies of the type of P416B and four MP42.The first will be connected in series, and the second - parallel.Resistors have to take one type of 22K, 36K, 100K, 120K, 270K, for two pieces 3K, 160K and 4,7K and 6,8K six pieces on.So how to make a portable radio in the home is not easy, patience is useful on a par with capacitors of different types: need one ekzemplpyaru type 2.0 and 0.7 MK, such as a pair of 10 mK * 10V, 5-0,6, 0.0, 100,and four pieces 5MK * 10V

# 2

antenna to which the two coils are connected, is responsible for receiving and transmitting the signal.Coils can be made of organic glass, polystyrene, and even pieces of cardboard a length of 2 cm and a diameter of 0.8 centimeters.They should be hard to wind a copper wire with a diameter of 0.5 millimeters, in a single layer.Speakers headphones can be replace

d if necessary.Next you need to think about how to install the radio.

# 3

first and fifth reels should wrap ten turns.Four turns of the second coil are in the middle of eight turns of the third coil (they are wound on a common basis).The fourth and sixth coil is wound directly onto the resistors (the minimum required resistance - 1 MW).There need to be two hundred turns.It is necessary to pay special attention to the absence of gaps between the winding lines.Two PCB board will form the basis of our radio.One of them will perform the function generator, and the second will receive the signal and amplify frequencies.

# 4

Two PCB board will form the basis of our radio.One of them will perform the function generator, and the second will receive the signal and amplify frequencies.How to set up the radio after proper connection of all elements?If the tool is not started work, will have to change next to the antenna through a variable resistor.It is necessary to improve the sound.When noise becomes very loud, you can start to adjust the inductance.Having achieved the desired sound, you must return a variable resistor in place.If, after these manipulations audibility is still far from ideal, it is necessary to set up as a generator and an antenna, which should be equipped with radio wavemeter.If the sound is distorted, you can try to change the resistors at the receiver board more suitable.

# 5

course, to collect such unit is not as easy as select radio in the store ready radios.But the result is worth the effort.Little advice for last: a first capacitor 5MK * 10B, the handle of which is located opposite the frequency of the transmitter, it must be equipped with a dielectric.Substituting different capacitor, it is necessary to finish the greatest deviation wavemeter pointer amplitude.Plenty of room for a homemade radio is huge.You can talk with a friend from next door, assign a secret meeting without using a cell phone.And of course, the most important thing - to feel the genius of technical ideas.

# 6

course, to collect such unit is not as easy as select radio in the store ready radios.But the result is worth the effort.DMalenkie advice for last: a first capacitor 5MK * 10B, the handle of which is located opposite the frequency of the transmitter, it must be equipped with a dielectric.Substituting different capacitor, it is necessary to finish the greatest deviation wavemeter pointer amplitude.Plenty of room for a homemade radio is huge.You can talk with a friend from next door, assign a secret meeting without using a cell phone.And, of course, the most important thing - to feel the genius of technical ideas.

# 7

course, to collect such unit is not as easy as select radio in the store ready radios.But the result is worth the effort.DMalenkie advice for last: a first capacitor 5MK * 10B, the handle of which is located opposite the frequency of the transmitter, it must be equipped with a dielectric.Substituting different capacitor, it is necessary to finish the greatest deviation wavemeter pointer amplitude.

# 8

Plenty of room for a homemade radio is huge.You can talk with a friend from next door, assign a secret meeting without using a cell phone.And, of course, the most important thing - to feel the genius of technical ideas.