antenna amplifier

antenna amplifier 1.Extenal Antenna 2.Used for car ect. auto devices 3.Materia is Brass or metal 4.With CE, Rohs

                   antenna amplifier                  

   In electronics, an antenna amplifier, also called antenna preamplifier, antenna preamp or antenna booster, is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 Ohm for coaxial cable and 300 Ohm for twin lead cable.An antenna amplifier allows a weak radio signal to be detected, thus most devices that receive radio waves already have an RF amplifier stage in the front end that amplifies the antenna signal.The KEY is that you want a relative "good" level of input at your receiver (TV) with the minimum noise. A mast mounted amplifier (doesn't matter if it is called an amplifier or preamplifier) is the best when you are in a remote area. In theory it is best if you amplify a "clean" signal to a higher level than a "noisy" signal to a higher level. All cable has loss and the higher up that you go in frequency (VHF to UHF) the more loss that the cable has. If you start with a low level signal at the antenna and then butt it into coax cable, you are going to have less come out at the other end than went into it from the antenna. The amount of loss depends upon a number of factors, cable type and cable length are the two most important. Cable is rated in db loss per 100' at X MHz (frequency). RG-6 cable is the cable most used in TV use. Like all things there is good RG6 and not so good. as a example, Belden 1829AC Coax - Series 6 has a loss of 4db/100 feet at 500 MHz (TV Channel 18)- 495.250 Channel 32 which is 580 MHz, Channel 52 is 700 MHz a 5 db loss At TV channel 2, the cable would have a loss of 1.4db. So at channel 18 you would loose more than 1/2 the power in 100' of cable between the antenna and the TV.A amplified indoor antenna does absolutely nothing for reception, since we all know that the only purpose of the amplifier is to overcome long lengths of wire and not to physically make the signal look larger.Amplifiers amplify everything, Both the signal present at the antenna and the noise, both ambient background noise (electric brush noise, gasoline engine ignition, electric fence, etc.), the noise generated by the amplifier itself and all other electrical noise. When the level of noise is louder than the signal, you will have no signal.

1988-up GM Micro/Delco Antenna Adapter Tip

  Car Antenna Accessories1.Radio Frequecy:88-108MHZ2.TV:UHF 48.5-223MHZ VHF450-862MHZ3.Plus(Radio):12-18db4.Plus(TV):UHF 22+_3db VHF 20+-3db5.Cable:TPY:1.5C-2VRG174V6.Impedance:50 Ohm,Length:5.0M+Plug7.Standing wave:<=3.0:18.Working tempeture:-35~+759.Deposited temperature:-40~+80

 Auto Power Antenna

Replace your vehicle's OEM antenna with this universal power antenna made from copper, polypropylene and steel materials. 5 mounting bases and 1 adjustable mounting base allow for quick and easy installation.

WHAT'S INCLUDEDFully Automatic Power Antenna5 custom mounting bases, 1 adjustable mounting basePRODUCT FEATURES

From our expanded online assortment; not available in all Best Buy storesUniversal power antennaReplaces the OEM power antenna in your vehicle.Copper, polypropylene and steel materialsFor a strong and durable design.5 mounting bases and 1 adjustable baseAllow for quick and easy installation.

Specification

Universal High Performance Windshield or Glass Mount Amplified AntennaSeparate AM/FM Amplifiers for superior performanceSeparate ground wire for noise cancellationRed LED to confirm amplifier operationCan be mounted on windshield behind mirror or on back windowAuthorized Internet Dealer1-year Manufacturer's warranty

Replacement Antenna Specifications
Mast Size	55"
Removable Mast	No
Automatic	No
Cable Included	Yes
Cable Length	Not specified by manufacturer
Antenna Color	Black
Antenna Material	Steel
Vehicle Manufacturer Compatibility	Universal
Warranty and Return Policy
Return Policy	Standard Return Policy
Parts Warranty and Return Policy	Standard Return Policy
Parts Warranty Duration	1 year
Labor Warranty Duration	1 year
Warranty Provider	Manufacturer

 Features

Product Origin: Australian Purchased Aerpro StockWarranty: Aerpro 12 Month Warranty

Aerpro AP178 Universal Multifit Automatic AntennaMultifit assorted head kitsFully automatic antenna11 headkits20 degree fixed - Mercedes W12350 degree fixed - Mercedes 180 series38 degree fixed - Mercedes 19048 degree fixed - Mercedes 200/300 W12438.5 degree fixed - Mercedes W201 19052.5 degree fixed - Mercedes 200/300 W12426 degree fixed - Opel Astra26 degree fixed - Lancia, Audi, Alfa Romeo, Mercedes 1900-30 degree - adjustable to suit 25mm hole0-30 degree - adjustable to suit 19mm hole5 section stainless steel mastExtends to 99cmDetachable cableCable 139cmReplacement mast: AP12Is designed to replace the original supplied antenna on your car.Comes complete with all necessary mounts and brackets.DIY Rating - Some mechanical and electrical experience with your car may be required.To suit models:

Although this is a Universal Automatic Antenna the head kits supplied for this antenna will replace the following original antennas without modification.Alfa Romeo's 1976-1989Audi Cars 1988-2001BMW Cars 1988-2005Daewoo lanos, Leganza and Nubira 1999-2005Holden Astra LD 1987-1989Mercedes Benz 180, 190, 200 and 300 SeriesMitsubishi Magna 1985-1997Volvo Cars

All kinds of Car Automatic antennas are available!OEM & ODM projects are welcome.Welcome to inquire on us!

Thank you very much!

antenna amplifier