Wide Orbit Radio Automation UPD Crack
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The VHF band at 121.250 Mhz (FM channel 68 in the United States) is designated for use by the United States Coast Guard Auxiliary's Ships-to-Shore-Only and Private VHF AIS (SSA-PVHF AIS) systems. These systems are normally used by vessels that are not required to be monitored on other AIS networks and that are incapable of transmitting on VHF band 146.975 Mhz or higher. They are considered to be part of a more traditional VHF marine radio system. Many ships use a combination of 121.250 Mhz private VHF AIS and AIS on the other VHF bands (eg. 121.125 Mhz, 147.600 Mhz, 148.100 Mhz, 174.8 Mhz, 222.4 Mhz, and 243.1 Mhz) due to cost. VHF band 121.250 Mhz is used for private VHF AIS in the United States, but other countries use the 80-meter VHF band at 121.025 Mhz.
AIS can be a useful tool for tracking global shipping lanes, but it is not a replacement for traditional marine traffic services or the IMM (International Maritime Organization). This is because AIS merely broadcasts in the maritime radio band, much the same way as AM or FM radio stations; receivers tuned to these frequencies are unable to distinguish between AIS transmissions and other radio signals. AIS transponders are located on specific ships and broadcasting at regular intervals and are not yet omnipresent; as such, receivers are not widespread and maritime services have worked to create systems to find and interpret ship transponders. Though the AIS technology is inexpensive, and can be easily retrofitted to existing vessels, it still lacks the global coverage of traditional marine traffic services. Moreover, for proprietary reasons, the signals of the AIS network are only broadcast and not available as an open data set.
The AIS network is developing rapidly and now has a growing number of transponders broadcasting data, and a number of marine vessel traffic services are now providing encrypted AIS data. The effectiveness and usefulness of the AIS network is growing, and it is expected to be widely used throughout the world by the year 2020.
There are also numerous commercial products available to amateurs that allow a user to view AIS traffic locally via a computer and, of course, the software can be used to control the radio transceiver used for monitoring to automatically transmit or receive signals from ships or buoys. Some of these products allow the user to tune manually to the AIS frequency and display traffic information as well as position on screen. Others are completely automatic and have no manual tuning step.
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