FAQ

The “automatic” antennas search for the satellite with azimuth, elevation and polarization data calculated by the microprocessor. From this point a specific programmable search begins, for example of a 5 ° radius (it can reach up to 25 ° and more). If the signal is too low, the antenna fails to lock onto the satellite and continues the search without results, making it impossible to watch TV programs.

If the antenna is also “manual” instead, once the search is finished, the system will go into “error” mode, it will stop on the theoretical aiming and it will be possible, by acting on the azimuth and elevation controls (directly from the control unit), to search for the aiming that ensures the maximum signal available. Normally the TV decoder, in this way, can still receive TV programs without difficulty. In addition, the antenna will follow the satellite at instrumental level even if the boat moves or turns, thanks to the compass, inclinometers and gyroscopes.

All Navisystem antennas are both automatic and manual, to ensure the best possible performance, in any situation.

The number 48/55/65/95 indicates the size of the dish in centimeters. A larger dish corresponds to a wider reception area, as well as obviously a higher signal level under the same conditions.

NT1-3 models can receive a maximum of 3 satellites, have 3 outputs for 3 decoders, are powered at 24V dc.

NT models have 12 programmable satellites for each part of the world. Furthermore, with a distribution switchboard, they also allow 40 decoders to be connected. They are powered at 220 V ac (or 110 V ac).

The NT models are equipped with the analogue and cheaper Sat 103 control unit. The HT models, on the other hand, are equipped with the digital Sat 105, with an alphanumeric display (16×2 cm) for more complete aiming control. The Sat 105 has a programming menu for total control of the pointing system.

Yes, Navisystem has achieved the double function by using the parabola as a 360 ° directional antenna for the reception of UHF signals.

Yes. A VSAT Navisystem antenna can provide up to four services: Hi-speed internet, satellite TV, digital terrestrial and live Meteosat.

With a VSAT and TV antenna we can backup the existing VSAT antenna when in coverage or backup to the TV antenna in order to always have both services. The purchase of a new TV antenna and VSAT allows you to correct the existing system, almost completely eliminating the problems.

Alternatively, the old antennas can be replaced with two new (Twin) Navisystems to guarantee two 360 ° services.

No, with only one antenna it is not possible because they are satellites too far apart. However, it is possible to simultaneously receive two adjacent satellites with a Navisystem dual feed. It is also possible to have internet and TV at the same time.

With two independent antennas both vsat and tv (Twin system) we can have two services on two satellites without interruptions on 360 °, even in the presence of obstacles between the antennas and the satellites.

Yes it is possible if this is non-magnetic, or it is possible to reduce the interference by compensating with an inverted magnet of equal intensity positioned near the horn. The satellite antenna, in addition to gyroscopes and inclinometers on three axes, also has a gyro-stabilized magnetic compass inside the antenna that allows the satellite to be locked in seconds.
If this is interfered with, the search is extended up to two minutes, then the satellite is correctly hooked up without errors, thanks to the recognition of the “naviber”. If, on the contrary, there is no interference, the antenna locks on the satellite in two seconds.

Yes, as explained above the search is longer, then the system starts tracking with the internal gyros. After the compass is no longer needed. If there is a gyrocompass or a compensated electronic compass on board, the connection with the antenna is still recommended, reducing the search for the satellite to a few seconds.

Yes, the VSAT antennas, satellite communication systems, allow you to navigate up to 50 Mbps with the new KA band systems, available from June 2016. This new band may have difficulty connecting due to rain, so it would be better to choose a dual system. KA-KU band to guarantee a very high speed service but also a service that is always operational on the lower frequencies of the KU band.

Yes, our engineers have been designing unique innovative systems for the past 15 years. In fact, a VSAT Navisystem antenna can also work for television programs. It is possible to choose 12 different satellites already programmed, so just choose a communication satellite or a television satellite without difficulty.

Yes, we can guarantee two 360 ° services even in the presence of 40-50 ° coverage due to on-board structures, with only two antennas.
The AB-BOX automatic exchange allows in five seconds to move the service from the right antenna to the left one and vice versa without creating inconvenience to the customer.

It is possible to supply four VSAT and TV antennas to receive internet, sat tv 1, sat tv 2, sat tv 3 or four of the 48 satellites programmed on the four antennas (12×4 = 48). In the presence of obstacles, it is advisable to also install the AB-BOX automatic switching kit, in this way the antennas exchange automatically to guarantee the four services without interruptions. Currently on some yachts to guarantee four services, two VSAT antennas with one switch and six TV antennas with three right / left switches are installed, without guaranteeing for example four television satellites or other combinations as described above.

Obligatory yes. The technician will have to issue a test form at sea, after having performed all the necessary tests, this allows you to have the special three-year guarantee.

Yes, under penalty of forfeiture of the guarantee. Always contact the Navisystem office before calling unauthorized technicians. Navisystem will send the nearest available technician.

Yes, with our four-output linear polarized universal LNBs and American Directv circular polarized LNBs. In fact, the worldwide antennas, equipped with two LNBs, can receive in Europe, Arabia, North America, Central America, Brazil, China and Africa in a completely automatic way.

For special needs, marine satellite antennas can work on different frequencies. A dual-band system can solve coverage problems in areas where one service is absent or when one does not work and the other does. Navisystem has bi-band systems for every need. They can work for television reception or internet connection. In some applications, both may be possible.