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How far will a 5-watt UHF radio communicate?

An excellent question, but very difficult to answer. It depends on the following (in order of importance): The height of the antennas above the average terrain. The terrain itself - vegetation and buildings. The over-the-air data rate. For example, 4800…

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How can I improve the communication range?

No. No radio link is 100% reliable, the M7 GX should not be used as the primary source of navigation or location information. GPS used in urban environments can suffer from "shadowing" caused by tall buildings, signs, and even large…

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Is vehicle tracking legal?

GPS tracking may be illegal in certain states and in certain circumstances. Our tracking devices may not be used to violate the privacy rights of others, or in violation of local, county, state, or federal statutes. In no way will…

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What Map Datum is used in the M7 GX?

The M7 GPS transponder report all latitude and longitudes using World Geodetic Survey 1984 (WGS85) datum. Speed is reported in km/hour. Time is UTC as reported by the GPS receiver. Altitude is in meters. The World Geodetic System is a…

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How Many Vehicles Can the RavTrack System Support

The number of vehicles that the RavTrack GPS tracking system can support depends upon the desired update rate, the over-the-air baud rate, and the number of repeaters. Because RavTrack PC interprets the ID as a decimal number, the maximum number…

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Why not send positions to the GPS satellite?

GPS accuracy is very hard to predict. The GPS receiver in the M7 GX has these specifications: " Horizontal <3 meters (50%), <8 meters (90%) " Altitude <10 meters (50%), <16 meters (90%) " Velocity 0.06 m/sec Tests show that…

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Why not send positions to the GPS satellite?

Unlike other satellite systems, such as Global Star or Iridium, GPS satellites cannot receive data. They only transmit position information for use by GPS receivers. This is a one-way system. Raveon Technologies Corp. uses UHF radio channels to broadcast their position information…

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What type of GPS antenna should I use?

For recreational and traveling purposes, standard GPS receiver antennas can be classified into two groups: 1. Upright Antennas Rectangular in shape, mostly visible and external to the main housing of the receiver. They can detect satellites right on the horizon.…

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How do I configure an M7 repeater

The M7 transceiver has a built-in store-and-forward repeater function.  When enabled, any M7 series transceiver or GPS ttransponder may work as a repeater as well as perform it "normal" duties.  For example, if you configure an M7 GX ttransponder to…

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