IMPORTANT: The amplifier does NOT require connection to the GPS device, phone, tablet (it only connects to a 12/24v power source). It amplifies the GPS signal in the vehicle, it is preferable that the indoor antenna be positioned as close as possible to the device, and the outdoor antenna be at least 2 meters away in a straight line from the indoor antenna.

The GPS signal amplifier is composed of 2 antennas, one for reception and another for transmitting the GPS signal to the navigation, phone, tablet, etc. The result is that the GPS signal in the cabin will be amplified up to 30dB!

It will help a lot when the conditions for capturing the GPS signal by the navigation are not the best, for example: In cities, tall buildings can block the GPS signal. Vehicles that have ionized windshields/with metal inserts. Similarly, irregular terrain, high mountains can block the signal or a very thick cloud cover can screen the GPS signal transmitted from the satellites.

Power is supplied via USB cable to 12V socket


GPS signal

Each satellite constantly transmits navigation signals at a rate of 50 bits/sec on frequencies in the electromagnetic spectrum. The signals will pass through glass, plastic, but will not pass through most solid objects (buildings, mountains, etc.)


The GPS signal provides precise coordinates based on the satellite's atomic clock, as well as the satellite's current status. Each transmission is 30 seconds long and contains 1500 bits of encoded information. This amount of data is encoded with a partial-response modulation (PRM) sequence that differs from one satellite to another. GPS receivers recognize the PRM codes of each satellite and decode the signal.


The GPS satellites transmit two carrier signals: the L1 frequency (1575.45 MHz), which contains the navigation message and the SPS (Standard Positioning Service) code signals, and the L2 frequency (1227.60 MHz), which is used to measure the delay caused by the ionosphere. [10]


A GPS signal contains three types of information:


pseudorandom code, is a simple ID code, which identifies the satellite that transmitted the information.

Ephemeris data, are constantly transmitted by each satellite, and contain important information about the satellite's status, current date and time; this part of the signal is essential for determining the current position.

almanac data, which tells the GPS receiver where each satellite should be at a particular time of day; each satellite transmits almanac data containing orbital information for that satellite and all other satellites in the system.


Sources of error for the GPS signal:

Factors that can degrade the GPS signal and thus affect accuracy are:


-delays when passing through the ionosphere and troposphere

-signal reflection - occurs when the GPS signal is reflected by tall buildings or hard surfaces before reaching the receiver

-errors due to the receiver clock - minimal errors due to time lag may occur because the receiver's built-in clock is not as accurate as the atomic clocks on board GPS satellites.

-orbital errors - also called ephemeris errors, are due to inaccuracies between the reported positions of the satellites.

-number of visible satellites - the receiver's accuracy is higher, the higher the number of received satellites

satellite geometry - represents the relative position of the satellites at a given time; ideal geometry is achieved when the satellites are at the greatest possible angle to each other, and unsatisfactory geometry occurs when the satellites are in line or grouped.


Specifications:
* Frequency: 1575.42MHz
* Signal gain: 25-30 dB
* Noise: <=2dB
* Attenuation: 7dB±20MHz
* Transmission frequency: 1575.42MHz
* Transmission gain: 11-14dB
* Emissions suppression: 10 dB+/-20MHz
* Antenna/power repeater: DC 3-5V
* Operating temperature: (-45C)-(+85C)
* Storage temperature: (-50)-(+90C)
* Transmission antenna dimensions: 47*39*14(mm), cable length 5 meters
* Reception antenna size: 50*39*15(mm), cable length 1.5 meters

* Covered area: approx. 2 square meters


Included in the package:

-2 GPS antennas, reception and transmission

-instructions for use

-2 adhesive strips

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