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In order for any GNSS receiver to be able to get a position fix and start navigating, it needs to collect GNSS data from at least three satellites. The time needed by the receiver to acquire the GPS data and calculate its position is referred to as Time to First Fix (TTFF). The TTFF is depending on how current the data in the receiver's internal memory is, the location of the receiver and the quality of the signals received from the GNSS satellites. Under good conditions, with the receiver stationary under an open sky, the time to first fix will typically be 35 - 50 s, and it can easily increase to minutes in a moving vehicle. In many indoor and covered locations, the GNSS receiver will not be able to get a first position fix at all, as the GNSS satellite signals are too weak to be decoded.
How does the ROGER™ GPS repeater work
ROGER™ GNSS repeater relays GNSS signals to places where they cannot normally be, by receiving GPS satellite signals with an antenna located outside the building and re-radiating them to the indoor or covered space.
The use of re-radiated signals mean that any GNSS device in the area covered by the GPS repeater is constantly being updated and tracking the status of the GPS satellites visible to the outdoor antenna.The result is that when the GPS device is moved from the indoor location covered by the GPS repeater to an outdoor location, the GNSS device will not have to go through the time consuming acquisition of current GNSS states. Instead it will alrady be navigating and tracking its location.
Please note that a GNSS repeater cannot be used for navigating indoors, as the GNSS device will always indicate the location of the outdoor antenna instead of its real position.
For an example of an implementation of the ROGER GPS Repeater in a local firestation and the benefits it has brought, click here.
GPSR-BP, ROGER GPS Repeater Package
Provides indoor GPS coverage over an area with a 20 - 25 m radius and contains:
Rugged, high performance "Bullet" outdoor GPS antenna GPSR-1, ROGER GPS Repeater Power supply 19,5m antenna cable with connectors
GPSR-EP, ROGER GPS Repeater Package Easy
Provides a simple,low-cost solution to achieve indoor GPS coverage over an area with a 10 - 15 m radius and contains:
Standard outdoor GPS Patch antenna with 6 m RG-174 cable attached. GPSR-1, ROGER GPS Repeater Power supply
GPSR-CIP, ROGER GPS Car Installation Package
An onboard repeater ensures trouble-free transmission of the GPS-signals inside the vehicle and reliable operation of GPS terminals and GPS trackers when the vehicle is on the move.
The ROGER GPS Car Installation Package contains:
Standard outdoor GPS Patch antenna with 6 m RG-174 cable attached. GPSR-1, ROGER GPS Repeater Voltage regulator (12V or 24V)
GPSR-SAP, ROGER Splitter & Amplifier Package
Intended to extend the coverage area provided by the
GPSR-BP ROGER GPS Repeater Package, the GPSR-SAP kit allows two extra repeaters to be added to the ROGER GPS Repeater Package to provide greater indoor GPS coverage. If necessary, a repeater can be installed up to 43 metres away from the outdoor antenna.
The extension kit is easy to integrate with an existing system that comprises an external antenna and indoor repeater and contains:
One GPSR-AS, ROGER Amplifier & Splitter Two GPSR-1, ROGER GPS Repeaters with power supplies One GPSR-A, ROGER GPS Amplifier Necessary RF Cable assemblies- 1 x 3 m RG-58 cable with TNC(M)/TNC(M) connectors for connecting GPSR-A to GPSR-AS
- 1 x 20 m RG-58 cable with TNC(M)/TNC(M) connectors for connecting GPSR-A to outdoor GPS antenna
- 2 x 20 m RG-58 cable with TNC(M)/SMA(M) connectors for connecting repeaters to GPSR-SA
- 1 x 25 cm RG-58 patch cable with TNC(M)/TNC(M) connectors for GPSR-AS
GNSS-L1G1BP
Provides indoor GPS L1 + GLONAS L1 coverage over an area with a 20 - 25 m radius and contains:
Rugged, high performance "Bullet" outdoor GPS antenna GNSS-L1G1, ROGER GPS Repeater Power supply| Size | 110 x 143 x 28 mm | |
| Weight | 165 g | |
| Overall Gain | > 40 dB | |
| Noise Figure | < 2 dB | |
| Variable attenuation | 0-40 dB | |
| Impedance | 50 Ohms | |
| Input connector | SMA-female | |
| Operating temperature | -25 - +40°C | |
| Power supply (included) | 9 V DC, 300 mA | |
| Indoor coverage radius | 20 -25 m | |
| Antenna power output | 5 V DC, 100 mA | |
| TX antenna gain | max +4dBd, RHCP polarization | |
| Other features | ||
| Automatic gain control | Output power limit –60dBm | |
| Feedback oscillation suppression | Status/power LED | |
| Manual gain control | Internal transmit antenna | |
| CE-certified | Yes, CE certified in 2008. |
The ROGER™ GNSS Line Amplifier is an amplifier that is used to allow for
longer antenna cable runs and/or signal splitting to several
GNSS repeaters. The standard RG-223 / RG-58 cable supplied with the ROGER™ GPS Repeater Package, can be used for antenna cable runs of up to 20 meters, while cable runs up to 40 meters can be realized using RG-213/RG-214 cable.
The GPS Amplifier has a typical gain of +16 dB at the GPS L1 and GLONASS L1 frequency band and built-in filter to remove unwanted signals that may have entered the cable at some point.The amplifier is powered though the output signal cable by the ROGER GNSS Repeater and also passes DC power via the input conncetor to the GNSS receiving antenna or an another GNSS line amplifier.
The ROGER™ GNSS Signal Splitter is a passive 1:5 signal splitter that is used to distribute the GNSS signal from the receiving GGNSSS antenna to several GPS Repeaters. The splitter covers both GPS +GLONASS L1 and GPS L2 frequency bands and has one chaining output and four repeater outputs.The chaining output is used for passing DC power from a ROGER GNSS Repeater to the GNSS line amplifier and / or the GNSS receiving antenna.
The ROGER™ GNSS Amplifier & Splitter combines an +16 dB GNSS Amplifier with a passive 1:3 GNSS splitter in the same housing as used for the separate Amplifier & Splitter. All amplifier and splitter in- and outputs are brought out to TNC panel connectors making the unit a truly versatile building block, capable of functioning either as an amplifier, a passive splitter or an active splitter. The splitter section has one chaining output with - 4 dB couplig loss and 2 repeater outputs with -12 dB coupling loss. The chaining output is used for passing DC power from a ROGER GNSS Repeater to the GNSS line amplifier and / or the GPS receiving antenna.
| Technical Data - Amplifier | Technical data - Splitter | ||||
| Size | 110*143*28 mm | Size | 110*143*28 mm | ||
| Weight | 135 g | Weight | 185 g | ||
| Operating temp. | -25 - +85°C | Operating temp. | -25 - +85°C | ||
| Connectors | TNC female input
TNC female output |
Conncetors | TNC female input
TNC female all outputs |
||
| Frequency range | 1575.42 +/-15MHz (filtered) | Frequency range | 1200 - 1700 MHz | ||
| Noise figure |
<5dB |
Impedance | 50 Ohm | ||
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Impedance |
50 ohm | ||||
| Power supply | +5-12VDC, max 20mA through coax | ||||
| Gain | Typ: +18 dB, min: +15dB | ||||
ROGER Splitter & Amplifier Product Brief
A range of standard cables, RG-58 and RG-214 for connceting the ROGER GPS Repeater products.
| Product code | Connectors | Remarks |
| RG58/20m | TNC male/SMA male | Connecting repeater to Antenna/Splitter/Amplifier |
| RG58/21m | TNC male/TNC male | For connecting amplifier/splitter |
| RG58/50m | TNC male/SMA male | Connceting Repeater to outdoor antenna - Amplifier required ! |
| RG58/3m | TNC male/TNC male | Connecting Antenna to Amplifier |
| RG58/25 cm | TNC male/TNC male | Connecting Amplifier to Splitter |
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RG214/40m |
TNC male/SMA male | For connecting Repeater - no Amplifier required |
| RG214/75m | TNC male/SMA male | For connecting Repeater - Amplifier required |
| RG214/100m | TNC male/SMA male | For connecting Repeater - Amplifier required |
Above standard cable lengths and types are available from stock. Other lengths and configurations are made to order. Please contact us for a quote.
For more information and latest updates, please also visit the official ROGER GPS Repeater website, www.gps-repeating.com
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