Frequently Asked Questions


Roger-GPS GNSS Solutions


ROGER-GNSS solutions offer you uninterrupted GPS, Glonass and Galileo satellite signal service inside buildings, tunnels, shops, and in vehicles.

  • A:

    The ROGER-GPS repeater operates by receiving GPS satellite signals with an antenna located outside the building and re-radiating the signals by a repeater to the indoor area or covered space.

    Use of re-radiated signals means that the GPS receiver is tracking the current GPS status. This means that when a GPS receiver is transitioning from covered area to outdoors, the receiver is instantly tracking the location instead of having to perform time consuming acquisition of GPS data.

  • A:

    If possible, try to install the outdoor receiving antenna on the roof where it has an unobstructed view of the sky and the satellites. If installation on the roof is not feasible, try to install it in a spot with as minimal shading of the sky as possible. You can always test the intended antenna location with a portable GPS receiver to see what kind of coverage you will get in that particular location. The pictures below shows a couple antenna installations and some useful installation accessories. The right hand picture is a good example of how an antenna can be installed by mounting on a pole attached to the wall and bringing the antenna above the roof line. Many facility owners are not too keen about penetrating the roof, so this can be a good solution in those cases.

    Before starting the installation and routing coaxial cables, and mounting brackets to the wall or roof you may want to use a GPS Test application to verify that you will receive a good quality signal at your chosen location.

  • A:

    Yes, you can adjust the output power of the Roger-GPS repeater by using the gain control knob on the unit.

  • A:

    By using a signal splitter from the outside antenna and hooking up two Roger-GPS Repeaters to the splitter.

  • A:

    Yes, the GPS signal can be transmitted distances of up to 2,600 feet with ROGER-GPS amplifiers and the right type of cables.

    For longer distances optical fibre can be used instead of coaxial cable. Optical fiber supports very long cable distances, up to 6.2 miles (10 km) or more, with minimal signal loss and degradation.

  • A:

    The Roger-GPS products are designed and built in Finland (EU member).

  • A:

    In the United States, the spectrum used to support GPS operations is allocated to the Radio Navigation Satellite Service (RNSS) on a shared basis for Government and non-Government use and is thus managed jointly by FCC and NTIA. The NTIA has placed restrictions on the use of GPS repeaters out of concern for interference to critical Federal RNSS applications (e.g., aviation). There is a process for obtaining NTIA approval to operate GPS repeaters in certain situations which is described in Chapter 8 (8.3.28-8.3.30) of the “Red Book” or NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management. http://www.ntia.doc.gov/files/ntia/publications/redbook/2013/8_13.pdf.

    Current regulation only allow sales of GPS Repeaters to International customers, US Federal Agencies, or third parties operating under the direction of the US Federal Government, or parties that have applied and received an Experimental License under Part 5 of the FCC rules, or parties that will be operating GPS Repeaters in a shielded room.

    For contact information on agencies that can help with the application process, please contact us.

  • A:

    All ROGER-GPS repeaters have CE approval. Additionally they comply with the essential requirements of R&TTE Directive (1999/5/EC). CE CERTIFICATE NB1986

    The Roger-GPS L1 GPS repeater has recertified CE code NB1986 in January 2012 according to the renewed ETSI EN 302 645 V1.1.1 (2010-03) Harmonized European Standard. The equipment conforms to the essential requirements of article 3.1.b (EMC) and article 3.2 (effective use of radio spectrum) of Directive 1999/5/EC. TCF ref. 3.6.2008. http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31999L0005:en:NOT

    Roger-GPS products have been classified in NATO N-S-N code 5825580004234 and NATO NCAGE code: A557G

  • A:

    Any GPS receivers or devices within the indoor coverage area will be “locked on” to the GPS signal, so as soon as the device moves outdoors it will be instantly locked on to the outdoor signal and avoid a lengthy wait for the device to acquire the signal and obtain a location fix.

    This is a valuable time, and sometimes life saving factor for emergency vehicles that would otherwise experience a delay while acquire the signal when leaving the building.

    In a commercial application, such as a laboratory or manufacturing plant where GPS-enabled equipment is manufactured, tested, repaired or serviced, there is no need to take the equipment outside the building in order to receive a live signal.

    Multiple GPS-enabled devices can receive the signal from a repeater unit just like they would be outdoors, so only one outdoor antenna and feeder cable would be needed per system.

  • A:

    Yes. WAAS (Wide Area Augmentation System) or SBAS (Satellite-Based Augmentation System) as ICAO (International Civil Aviation Organization ) calls it, uses ground-based reference stations and master stations to send correction messages to geostationary WAAS satellites. Those satellites in turn broadcast the correction messages so that WAAS-enabled GPS receivers can utilize these corrections and compute position data with improved accuracy. The ROGER-GPS repeater is handling these signals transparently and a WAAS-enabled receiver will receive the signal indoors in the same manner as outdoors.

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CAGE Code 79FY4

Current regulations restrict sales of GPS Repeaters to the following parties:
International Customers (outside the U.S.), agencies of the US Federal Government, branches of the US Military, parties operating under the direction of US Federal Government, parties that have received an STA or Experimental License under part 5 of the FCC rules, and parties that will be operating GPS Repeaters in a shielded room or anechoic chamber. For further information regarding NTIA requirements, see Chapter 8.3.28 of the NTIA manual, http://www.ntia.doc.gov/osmhome/redbook/8.pdf


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