A VHF radio is the most reliable way to communicate with the authorities when you need help on the water. - A VHF radio is the most reliable way to communicate with the authorities when you need help on the water.
Many countries require a license to use a VHF radio. One reason for the license is to keep the on-air conversations following specific protocols, which helps shape the communication and keep everything understandable. In some countries, like the U.S., laws allow recreational users to use VHF ...
If you are looking to solve the distance in statute miles or kilometers you can use these formulas: dsm = 1.345 ∗ √hf dkm = 3.57 ∗ √hm Radio Horizon The radio horizon is probably a truer representation of the maximum range of your VHF radio. It takes into account the ever so ...
Senior student Sarah Dalby said that when she started the project, she hardly knew how to use a saw (锯) but now she is a fast learner loves the work. “We have to appreciate the veterans for protecting us and giving us the freedom and rights that we enjoy,” she added when explainin...
A deluxe four-person model costs about $4,000 -- well worth the price if you ever need to use one. Life rafts are packed by the manufacturer and require regular servicing to ensure usability. Unfortunately, even the most expensive life rafts aren't always leak-proof. The ocean is tough ...
If you face a life-threatening emergency, use your VHF marine radio toissue a MAYDAYcall on Channel 16 (the distress channel). Keep in mind that the height of the antenna and the power of your radio can limit the distance for sending and receiving messages. Use the one-watt setting excep...
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Most modern glow-in-the-dark items use safe, non-radioactive phosphors like zinc sulfide and strontium aluminate. However, items using radioactive elements for continuous glow, such as certain watches, are regulated to ensure they are safe for everyday use and exposure. Lots More Information ...
This power can then be used to spin electrical generators. Diesel-electric engines work much the same way, yet use a direct drive system rather than a turbine. Output shafts are connected to electrical generators to produce electrical power. Both engine types require fuel, and lots of it. ...
use of the help desk as an indicator of high product quality and likely renewal. Instead, they found non-use of the help desk to be a signal that the customer had not deployed the product. That is, there were no calls for help because no one was using the product. Needless to say,...