| ON the TRANSMISSION OF VIDEO AND ANSWERS AND QUESTIONS SIGNALS AUDIO IN the 2.4 BAND OF GHz.
The reach indicated in the characteristics of the transmitters talks about ideal conditions, that consist of which the antennas of the transmitter and the receiver “are seen to each other” and they do not have obstacles by means. This is especially important in the systems of high frequency like the 2.4 Ghz that are microwaves and that need a direct propagation of the signal from the transmitter to the receiver.
If, but not this guaranteed. The majority of the normal partitions is crossed without problems by the transmitters of audio and video, but sometimes there are walls that due to his metallic structure, or to its thickness they prevent that they are crossed by the signal.
This depends on the type of wall, its number and the power of the transmitter. Of general form a standard transmitter of 10 mW usually crosses of 4 to 6 normal partitions in a 30-50 distance meters. This is only a approximate indication based on the real experience of the users.
Although one is few meters of the receiver, is frequent that take place interferences if we move the transmitter of abrupt form, like it is in those cases in which we took the transmitter above and we walked. This is due to the high directionality of the signal. The case is different if it is a vehicle since the changes take place of smooth form but and secure good results.
Basically there are two forms: To increase the power of transmission, or to increase the gain of the receiving antenna. If the gain is increased of the antenna, is necessary to consider that each 3 dB of gain is equivalent to duplicate the transmission power. For example a transmitter of 10 mW with an antenna of 6 dB is equivalent to a transmitter of 20 mW of power with an antenna of 3 dB, and with a 15 antenna of dB is equivalent to a 320 transmitter of mW
By all means that when increasing the power is increased the reach, but it is necessary to consider that exists you limit physicists and therefore not always it is a solution. For example when there are obstacles by means, you accustom is impossible to cross them by much power that we apply. In some cases where a normal transmitter of 10 mW does not arrive, it is not enough with using one of 50 mW, if that often does not obtain anything until powers of 500 or 1000 are not used mW and sometimes it is not even thus is possible.
This is not certain, the one of 50 mW has 5 times but power that the one of 10 and therefore has much more reaches. What happens normally is that they are not in the same conditions. The size of the internal antenna that they take the transmitting spies is of about 3 cm, which as large as gives to an idea the radio waves us. This means that following the position, the distance to the ground, the wall, the objects of around, etc. can affect much to the antenna efficiency and therefore to the perceived reach. If they tried on both transmitting of video in the same conditions, then we would verify the real reach of the same.
The frequent reasons but usually are: Bad position of the antenna of the transmitter or the receiver; it tries to move them of site, to look for other angles, to turn the antennas etc. If the cause is the direction of the apparatuses normally will be enough with moving the receiver to another place, or to move the transmitter slightly. It considers that at the most high east the best transmitter will be its reach. The ideal position of a transmitter of 2.4 GHz is when this to but of 1.5 meters on the ground.
The second important cause but is that there are interferences produced by other transmitters. In some places the use of radio networks of computers or the new wireless digital switchboards, can create forts interferences that they prevent that the signal of the transmitter arrives at the receiver. In these cases the unique solution is to try with other channels to see if there is some is not affected. It considers that the apparatus that produces the interference can be of a neighbor or a next company, but sometimes the cause of the interference can be to several hundreds of meters of distance.
Theoretically if, but normally no, the maximum that is obtained in normal conditions is between 2 and 3 different channels working simultaneously. This depends much on circumstances like the position of the transmitters with respect to the receiver and the conditions of the surroundings, if he is inner or outer, the distance and mainly the type of used apparatus. Some transmitters are of greater quality and have less overtones and less espureos than others reason why a greater separation in the channels is obtained and if they can transmit 4 emitters simultaneously.
There is no disadvantage. It can use all the receivers that want to see the signal of the transmitter in different points.
Some receivers have the function of scanner or automatic secuenciador and allow to show the signal of the different channels from consecutive form one behind another one.
No, normally it will not be able to see any, since interferences are made to each other. Each transmitter must be in a different channel. If still interferences are made, tries to change the channel of one of them by another different one.
In case it has a receiver of the same frequency and channel and if one is within the radius of cover of the transmitter, the answer is if.
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