Do they constantly have noise and artifacts in the picture? Does the picture drop out completely and come back after a few seconds? Does the sound stutter on the car radio or do they have no reception at all? Sounds like they need an antenna amplifier. With an antenna amplifier, weak radio signals in the car and in the house can be amplified so that your end device, for example, your TV or car radio, again have reasonable and clear reception.
Basic Information About Antenna Amplifiers
Antenna amplifiers serve a simple purpose: to transform a weak input signal into a strong output signal. A good old analog radio is the best way to illustrate this principle: If, without the signal amplifier, strong hiss and noise impair listening pleasure, reception is crystal clear after the antenna amplifier is switched in.
Signals transmitted through the air (terrestrial) are not only used by FM radios: SAT amplifiers for improved satellite reception, cable amplifiers for improved cable TV or radio reception and DAB antenna amplifiers for digital car radio are also used. If video signals are to be transmitted from one room to another, a TV amplifier is often used for long cable lengths, which transmits the amplified TV signal from one room to another without interference.
An Amplifier Can’t Do Magic, But It Can Make A Lot Of Things Better
One of the basic principles of wireless technology is that even the best amplifier does not turn a bad signal into a good one. Therefore, with the installation of an antenna amplifier is also necessarily think about other positioning or another antenna. It is also crucial for the subsequent reception quality that possible interference is minimized: the multitude of WLAN devices with more or less good radio shielding, thousands of which are set up in Germany every day, provide for a multitude of interference.
Digital And Analog Signal Amplification
Analog signals are relatively easy to check for quality: everyone knows the phenomenon of a noisy radio. Either the station is too far away, the antenna is still retracted and there is strong interference: There are many reasons why a radio may hiss on FM or medium wave reception. If the reception conditions are optimal and possible sources of interference are eliminated, an antenna amplifier can directly and noticeably improve the signal: Looped in between the antenna and the radio, it directly ensures clear reception with significantly less or no interference noise. The same effect could be observed in the past with analog television – but this has been completely switched off in Germany for some time.
Digital signals, on the other hand, behave somewhat differently in the event of interference: here, short dropouts occur at low signal strength, and the sound or picture reproduction is interrupted quite quickly. In the case of radios, a DAB antenna amplifier should be connected in between.
With video signals, for example via satellite or DVB-T, disturbances of the input signal become noticeable through so-called „artifacts“ in the picture: The picture falters, individual parts of the picture are shifted or the picture freezes completely. Such problems can be solved with a SAT amplifier or a cable amplifier; not infrequently, an old or too weak house installation is the reason for poor TV reception. If a SAT amplifier or a cable amplifier cannot solve this problem, you should either think as a house owner about a renewal of the house-internal antenna line or inform your landlord about the bad television reception.
In the cable network in particular, the signal strength is also decisive for the data transfer rate of your DSL connection via cable: the same interference signals, only invisible to you, can also have a decisive effect on the data transfer rate of your DSL line; here, too, a signal amplifier can provide a remedy and enable higher data rates. Here, too, make sure that the cables are in perfect condition and that the connection sockets are in good condition.
Antenna Amplifier In The Car: Not A Matter Of Course, Especially With Retrofit Radios
In grandpa’s day, a long telescopic antenna, rising steeply and up to a meter long from the fender, provided good reception from Sicily to the North Cape. With the downsizing of car antennas, however, antenna amplifiers built into the vehicle became necessary: The small rear or stub antennas cannot deliver decent signals to the car radio without additional signal amplification.
If the manufacturer’s standard radio is installed in the car, the antenna amplifier provided by the manufacturer is used in the car as standard; reception is possible under normal conditions without any problems. However, if an aftermarket radio from the accessories is installed, the manufacturer often does not provide for antenna amplification: Either the circuit must be specially adapted or the aftermarket radio is not compatible with the vehicle manufacturer’s antenna amplification. Especially in old vehicles that are not yet equipped for digital broadcasting according to the DAB standard, the installation of a good DAB antenna amplifier is almost always necessary.
The antenna amplifier in the car can be operated in different ways: Some radios offer so-called phantom power directly via the antenna cable, in which case the amplifier is supplied with power directly from the antenna cable. Other car radios or other car manufacturers, however, rely on an external power supply, here the antenna amplifier is usually installed somewhere in the vehicle and is supplied with voltage via the on-board electrical system.
Conclusion: Permanently Good Reception Is Possible
With a good antenna amplifier, you can permanently improve your reception, regardless of the terminal device. When selecting one, look for quality, a reputable manufacturer and good operating instructions. Mounted according to the installation instructions, your reception problems should soon be a thing of the past. We wish you good reception at all times!