Lamp transceiver with own hands

Lamp transceiver is a device that is designed to transmit signals of a certain frequency. As a rule, it is used as a receiver. The main element of the transceiver is considered to be a transformer, which is connected to the inductor. The peculiarity of the lamp modifications is the stability of the transmission of the low-frequency signal.

In addition, they are distinguished by the presence of powerful capacitors and resistors. Controllers in the device are installed the most diverse. To eliminate various interference in the system, electromechanical filters are used. To date, many are interested in installing low-power transceivers at 50 watts.

Short wave transceivers (HF)

To make the HF transceiver by yourself, it is necessary to use a low power transformer. In addition, care should be taken for amplifiers. As a rule, in this case the patency of the signal will increase significantly. In order to be able to deal with interference, the device is equipped with zener diodes. Most often transceivers of this type are used in telephone exchanges. Some make a HF transceiver with their own hands (tube), using an inductor, which must withstand a maximum of 9 Ohm. The device is always checked for the first phase. In this case, the contacts must be set to the upper position.

Antenna and unit for transceiver KV

The antenna for the transceiver is made with the help of various conductors. In addition, a pair of diodes is required. The antenna capacity is tested on a low-power transmitter. Another device requires an element such as a reed switch. It is necessary to transmit a signal to the external coil of the inductor.

In order to make the power supply of the transceiver with your own hands, you need a high-frequency generator that works on a pair with a mixer. In addition, the specialists use capacitors of various capacities. The maximum voltage of the device must be at a level of 50 V. The limiting frequency in this case does not exceed 60 Hz. To solve problems with electromagnetic interference, special circuits are used. In the device they are also designed to double the voltage.

Ultrasound wave devices (VHF)

Making a VHF transceiver is very difficult. In this case, the problem is finding the right inductor. It is obliged to work on ferrite rings. Condensers are best used in a variety of capacities. To change the phase, only controllers are used. The use of multichannel modification for transceivers is not advisable. Chokes in the system are required with a high frequency, and to increase the accuracy of the device using zener diodes. They are installed in transceivers only behind the transformer. To prevent transistors from fading, some experts advise soldering electromechanical filters.

Models of long wave transceivers (DV)

To make long-wave tube transceivers by own hands it is possible only with participation of powerful transformers. The controller in this case must be designed for six channels. The phase of the receiver is changed via a modulator, which operates at a frequency of 50 Hz. To minimize interference on the line, filters are used the most diverse. Increase the conductivity of the signal in some is obtained through the use of amplifiers. However, in this situation, capacitive capacitors should be taken care of. Transistors in the system are important to install behind the transformer. All this will improve the accuracy of the device.

Features of devices of medium wave (CB)

It's quite difficult to make medium wave tube transceivers by oneself. These devices operate on LED indicators. Lamps in the system are installed in pairs. The cathodes in this case it is important to fix directly through the capacitors. Solve the problem with increasing polarity by using an additional pair of resistors at the output.

To close the circuit, a relay is used. An antenna to the chip is always fixed through the cathode, and the power of the device is determined through the voltage in the transformer. Most often, transceivers of this type can be used on airplanes. There, the control is carried out through the panel or remotely.

Antenna and unit for CB transceiver

Make an antenna for this type of transceiver, using a conventional coil. Its external winding must be connected to an amplifier at the output. Conductors in this case must be soldered to the diode. Buy it in the store will not be difficult.

To make a block for this type of transceiver, a relay is used, as well as a generator of 50 V. Transistors in the system are applied only to the field. A choke in the system is required for connection to the circuit. Pass capacitors in blocks of this type are used very rarely.

Modification of the VHF-1 transceiver

This transceiver can be made with lamps on their own using a 60 V transformer. The LEDs in the circuit are used for the purpose of phase recognition. Modulators in the device are installed the most diverse. High voltage transceiver is maintained due to a powerful amplifier. Ultimately, the resistance of the transceiver must be perceived to 80 ohms.

To ensure that the device has successfully passed the calibration, it is important to very accurately adjust the position of all transistors. As a rule, the closing elements are placed in the upper position. In this case, the heat losses will be minimal. The coil is wound up last. Diodes on the keys in the system are checked before switching on necessarily. If their connection is poor, then the operating temperature can sharply rise from 40 to 80 degrees.

How to make a VHF-2 transceiver?

To properly fold the transceiver with your own hands, the transformer must be taken at 60 V. The maximum load it is required to withstand at 5 A. To improve the sensitivity of the device, only high-quality resistors are used. The capacitance of one capacitor must equal at least 5 pF. The device is finally calibrated through the first phase. In this case, the closing mechanism is first set to the upper position.

The power supply must be switched on when observing the display system. If the frequency limit exceeds 60 Hz, then the nominal voltage drops. The conductivity of the signal in this case can be increased by an electromagnetic amplifier. It is installed, as a rule, next to the transformer.

KV models with slow sweep

It is not difficult to fold the KV transceiver by yourself. First of all, you need to choose the required transformer. As a rule, imported modifications are used that are capable of withstanding a maximum load of up to 4 A. In this case, the capacitors are selected based on the sensitivity of the device. Field transistors in transceivers are found quite often. However, they are not without flaws. Mostly they are associated with a large error at the output.

This is due to an increase in the operating temperature on the outer winding. To solve this problem, the transistors can be used with the marking LM4. Their conductivity is fairly good. Modulators for transceivers of this type are suitable only for two frequencies. The connection of the lamps takes place standardly through the throttle. To achieve a rapid phase change, amplifiers in the system are only needed at the beginning of the circuit. To improve receiver performance, the antenna is connected via a cathode.

Multi-channel modification of the transceiver

Make a multichannel transceiver with your own hands is possible only with the participation of a high-voltage transformer. The maximum load it is required to withstand to 9 A. In this case, the capacitors are only used with a capacitance of more than 8 pF. Increase the sensitivity of the device to 80 kV is almost impossible, this should be taken into account. Modulators in the system are applied to five channels. To change the phase, chips of the PPR class are used.

Direct Transform SDR Transceiver

To add the SDR transceiver by hand, it is important to use capacitors with a capacitance of more than 6 pF. This is largely due to the high sensitivity of the device. Additionally, these capacitors will help with negative polarity in the system.

For a good signal conductivity, at least 40 V transformers are required. At the same time, they must withstand a load of about 6 V. Microcircuits, as a rule, are designed for four phases. The transceiver is tested immediately from the limiting frequency of 4 Hz. To cope with electromagnetic interference, the resistors in the device are of the field type. Two-way filters in transceivers are quite rare. The maximum voltage in the second phase of the transmitter is required to withstand at 30 V.

To increase the sensitivity of the device, variable amplifiers are used. They work in transceivers pair with resistors. To overcome low-frequency oscillations stabilizers are used. In the anode circuit, the lamps are installed in series through the throttle. Eventually, the closing mechanism and the indicating system are checked in the device. This is done for each phase separately.

Models of transceivers with L2 lamps

A simple transceiver assembles with the help of a 65 V transformer. Models with these lamps differ in that they can work for many years. The operating temperature parameter for them on the average fluctuates around 40 degrees. In addition, it should be taken into account that they can not connect to single-phase microcircuits. Modulator in this case it is better to install on three channels. Due to this, the dispersion index will be minimal.

Additionally, you can get rid of problems with negative polarity. Condensers for such transceivers are very diverse. However, in this situation, much depends on the limiting power of the power supply. If the operating current in the first phase exceeds 3 A, then the minimum capacitor volume should be 9 pF. As a result, you can count on stable operation of the transmitter.

Transceivers on resistors MC2

In order to correctly fold the transceiver yourself with these resistors, it is important to choose a good stabilizer. It is installed in the device next to the transformer. Resistors of this type are capable of withstanding a maximum load of about 6 A.

Compared with other transceivers, this is quite a lot. However, paying for this is an increased sensitivity of the device. As a consequence, the model is able to fail at a sudden increase in voltage on the transformer. To minimize heat losses, the device uses a whole system of filters. They must be located in front of the transformer, so that the resistance in the final analysis does not exceed 6 ohms. In this case, the scatter indicator will be insignificant.

Single-Band Modulation Device

The transceiver assembles himself (the diagram is shown below) from a 45 V transformer. Models of this type are most often found on telephone exchanges. Single-band modulators are quite simple in structure. Switching in phase in this case is carried out directly through a change in the position of the resistor.

The limiting resistance in this case is not sharply reduced. As a result, the sensitivity of the device always remains normal. Transformers for such modulators are suitable with a power of not more than 50 V. It is not recommended to use field capacitors in the system by specialists. It is much better, from the point of view of experts, to use conventional analogs. The transceiver is calibrated only in the last phase.

Model of transceivers on the amplifier РР20

Make a transceiver with your own hands on an amplifier of this type can be using field-effect transistors. Signals transmitter in this case will transmit only short-wave. The antenna of such transceivers is always connected through a choke. Limit voltage transformers are required to withstand at 55 V. For good current stabilization, low-frequency inductors are used. To work with modulators they are ideal.

The microcircuit for the transceiver is best selected for three phases. With the above amplifier it is operated well. Problems with the sensitivity of the device are rare. The disadvantage of these transceivers can easily be called a low scattering coefficient.

Transceivers with unbalanced antennas

Transceivers of this type are very rare today. This is due in large part to the low frequency of the output signal. As a result, the negative resistance at them sometimes reaches 6 ohms. In turn, the maximum load on the resistor is in the region of 4 A.

To solve the problem with negative polarity, special switches are used. Thus, the phase change occurs very quickly. You can even configure these devices for remote control. The above antenna on the relay is installed with the marking K9. In addition, the inductor must be well thought through in the transceiver.

In some cases, the device is issued with a display. High-frequency circuits in transceivers are also not uncommon. Problems with oscillations in the circuit are solved by means of a stabilizer. It is installed in the device always above the transformer. They are at the same time at a safe distance from each other. The operating temperature of the device should be around 45 degrees.

Otherwise, overheating of the capacitors is inevitable. Ultimately, this will lead to their imminent damage. Considering all of the above, the housing for the transceiver must be well ventilated by air. Lamps to the chip are usually mounted through a choke. In turn, the modulator relay must be connected to the external winding.