Today, many people prefer satellite TV. However, keep in mind that the antenna needs to be tuned. To this end, special devices are on the market that are able to determine the exact location of satellites. This process is carried out with the help of receivers. Capacitors are also used to change the threshold frequency of the signal.
It is quite difficult to assemble a device of this type at home on your own. However, if you study the basic configurations of devices, you can choose the simplest model for assembly. It is also important to remember that in order for a modification to be used correctly, it must be tested. Features of the device settings depend on the type of model.
Device on beam transistors
To make this type of device for tuning satellite dishes with your own hands today is quite difficult. However, if you find all the necessary components, then you can figure out this issue. Firstqueue for the device is looking for a good receiver. Typically, it is chosen to be of the asynchronous type. However, there are other modifications on the market. They differ greatly in parameters.
The advantage of asynchronous receivers is their stability. They are also capable of operating at high frequencies. After installing the specified component, it is necessary to solder the resistors directly. For this purpose, you will have to use a blowtorch. However, the contacts must first be cleaned with any metal object. Capacitors for this model are more suitable for field type. Their capacity is quite significant, but the throughput is sometimes disappointing. Filters for the device are most often selected as a corrective type. The display for the model must be selected separately. Directly microchips for receivers are used class KK20.
Easy setup of the device on beam transistors
Tuning the tuner of the satellite dish independently takes place on short waves. First of all, the user must reset the signal. To do this, the sensitivity of the device must be reduced as much as possible. After that, it is important to check the settings options. As an example, consider the Hotbird antenna. The transmitter is installed on her shortwave.
Tuning the Hotbird satellite dish is carried out at a threshold frequency of 50 Hz. Then gradually it must be increased. In this case, the satellite data must be known in advance. In this case, much depends on the typereceiver. After increasing the threshold frequency, the sensitivity must be reduced. This should be done until the signal is completely reset.
Model with laser receiver
It is quite difficult to make a device for tuning satellite dishes with your own hands at home with a laser receiver. First of all, the case is naturally selected for the model. In this case, displays are often used with a P2P series modulator. Only broadband zener diodes are suitable for the model directly.
However, some experts still prefer selective analogues. The receiver must be installed near the filter. In this case, the zener diode is soldered last. To test the model, you need to use the Spectra program. Triggers for devices of this type are rarely used. The sensitivity parameter should average no more than 4 microns. Also, before checking the device, you must make sure that the receiver is intact.
Easy setup for model with laser receiver
Tuning the satellite tuner independently occurs at a frequency of no more than 30 Hz. In this case, you must first reduce the sensitivity of the device. After that, the threshold frequency of the satellite is selected. If the indication system shows an increase in signal interruption, then the sensitivity must be increased. As a result, the user should have full synchronization with the satellite.
Using Binary Buses
Making a do-it-yourself device for tuning satellite dishes with a binary bus is not a big problem. The receiver in this case is more appropriate to choose an optical type. It is quite expensive today, but it can work a lot. Resistors for models are only suitable for non-chromatic types. However, before installing them, the bus is soldered directly. Due to its use, the capabilities of the device are significantly increased. However, it should be noted that only the P2P series can be used in this case. In this case, the filters for the system are selected corrective type. To test the model, you can use "Spectra" (a program for tuning a satellite dish).
Precise tracking devices
You can assemble an accurate tracking device for setting up satellite dishes with your own hands using a wave receiver. Finding it in a radio hardware store is quite easy. For the price, it is not very expensive. Capacitors with a capacitance of at least 5 pF are suitable for this type of receiver. Filters deserve special attention in the device. Most often they are selected based on the power of the resistors. Microcircuits of the PP20 type are often used as a modulator. It should also be noted that binary tires are rarely installed on such modifications.
Devices with latitude converter
The cost of this type of satellite antenna tuning devices (market price) is around 3 thousand rubles. However, you can collect them yourself. They differ in the high parameter of the threshold frequency. ATIn this case, the setup process is quite fast. Receivers for models are often used optical type. A total of three capacitors for the system must be purchased.
However, their capacitance should not exceed 3 pF. All this is necessary to ensure that the stability of the system is not disturbed even at high clock speeds. Zener diodes for the model are appropriate to use the angular type. However, wave distortion in this case can be quite serious.
Fine tuning model with latitude converter
The device of this type is tuned at a threshold frequency of 35 Hz. First of all, to adjust the device, you need to set the satellite parameters. After that, it is important to check the sensitivity of the model. The indicator in this case should be at zero. The next step is to gradually increase the threshold frequency. In this case, the pairing of signals is checked on the display. In order for satellite television to adjust, the resonant frequency must eventually stabilize. To test the device, the Ropit program is used.
Use of pulse converters
Devices with pulse converters today are quite in demand. They are suitable for tuning selective antennas. Receivers are most often selected for devices of the optical type. In this case, the assembly of the model must begin with the installation of feed-through capacitors with a display. In this case, the regulator can only be takenrotary type.
Only chromatic resistors are used to stabilize the signal transmission process. In this case, zener diodes are used quite rarely. A total of thyristors for the device will require two. One of them should be installed directly at the converter. In this case, the second thyristor is mounted near the modulator.
Application of cyclic capacitors
Device with cyclic capacitors has been used to tune antennas for a very long time. Receivers for them are suitable for a variety of. To assemble the model yourself, first of all, you should choose a case. After that, the modulator is installed directly to adjust the threshold frequency of the device.
The next step is to fix the capacitors on the chip with a blowtorch. Then it remains only to buy chromatic resistors. In this case, it is advisable to use a pulse type converter. Filters, many experts recommend the use of magnetic. The average sensitivity of the device must be at the level of 3 microns by default. For shortwave systems, such devices are ideal.
Tuning the model with cyclic capacitors
To adjust the device, you must first test it for serviceability. To do this, it is important to use Spectra (a program for tuning a satellite dish). The system is checked, as a rule, at a frequency of not more than 55 Hz. ATIn this case, the sensitivity of the device must be at the level of 5 microns. Only after testing, you can proceed directly to tuning the antenna. To do this, first of all, the parameters of the satellite are selected.
As an example, consider the "Telecard" antenna. It refers to shortwave models. The Telecard satellite dish is tuned at a frequency of 30 Hz. When setting the parameters, you need to pay attention to the pairing indicator. If it deviates from its original value, then the sensitivity must be reduced. Next, the threshold frequency is set to 40 Hz. At this stage, the signal should stabilize.
Low sensitivity modifications
If satellite TV is connected, antenna tuning can be done using a low-sensitivity model. Today it is quite common. However, it has very significant shortcomings. First of all, they are associated with poor stabilization of the models. Receivers they use only optical type.
In this case, the sensitivity on average does not exceed 2 microns. All this is due to the fact that the filters in this case are suitable only for the magnetic type. However, the main advantage of the models is the quick tuning of low-frequency zener diodes. Thus, the pairing of signals is quite fast. For beginners, such devices are ideal.
