What is VHF used for in aviation?
VHF communication systems are the most widely used for maintaining contact between ground and aircraft. This employs “Line Of Sight” transmission, which translates to a range of about thirty miles for an aircraft operating at 1,000 feet above the ground, or about 135 miles with an aircraft operating at 10,000 feet.
Where do I find FSS frequency?
The Flight Service frequencies are listed in a box above certain VOR stations. The most common frequencies are 122.2, 122.4, or 122.6. Also, most GPS (or iPad apps like ForeFlight) have a listing of the nearest Flight Service frequencies.
How do I find my FSS number?
If you obtain a standard briefing several hours before the flight or when the weather is questionable, it is a good practice to call an FSS for an abbreviated briefing just before takeoff. The FAA has established a universal toll-free telephone number for FSSs: 1–800–WX–BRIEF (1–800–992–7433).
How do you calculate the range of a VHF transmitter?
I’m trying to calculate the range of a VHF transmitter on an aircraft output power 50W, frequency 130MHz, and reciever sensitivity of -100dBm. The calculations I have made give me ridiculously high numbers in the regions of thousands of Kilometres. The formula I used for this is as follows:
How to check for DTV signals in your area?
DTV Reception Maps. Use this program to check for the DTV signals that are available at your location. Enter your address in the box below and click Go! The DTV coverage map will list all stations in your area.
How can I Find my transmitter in my area?
Tips for the Transmitter Locator Tool Check to see if the digital channels in your area broadcast on the UHF or VHF band. Look at the column heading in dark blue for UHF or VHF. Determine how far your antenna will be from the transmitters. Use the Heading listed in the results below and a compass to aim your antenna towards the towers.
How can I see the distance between my TV towers?
Using this tool, you will see the radius patterns showing the distance of coverage between your location and the broadcast towers. The towers are shown by black markers on the map, and you can click on each tower to see the affiliate, band, latitude, longitude, and heading for each transmitter.