How far will VHF transmit?
A typical VHF station operates at about 100,000 watts and has a coverage radius range of about 60 miles.
How is VHF radio range calculated?
VHF Radio Range To calculate VHF range, you may want to use this formula: VHF Range = 1.33 × (√H-aircraft + √H-gs). Where: VHF Range in nautical miles, H-aircraft is the altitude of the aircraft in feet and H-gs is the height of the ground station antenna in feet.
How far will a handheld VHF transmit?
Transmission Range The general rule of thumb, for hand-held VHF radios, is that 1 Watt is approximately 1 nautical mile of range (example: a 5 Watt VHF radio will have an approximate 5 nautical mile range when set to the 5 Watt setting). Most hand-held VHF radios are between 1 Watts and 6 Watts.
How far will a 6 watt VHF radio transmit?
The 5 watt radio can reach up to 12 miles or more. Some handheld radios have 6 watts which can reach up to 20 miles in the right conditions.
How Far Will 8 watts transmit?
From the air it gets even better. Most airband radios are 5 – 8 watts and typically have a range of around 200 miles.
HOW FAR CAN 2 way radios transmit?
Wattage and Range of Coverage: Many two-way radios claim they have a range up to 25 miles in optimal conditions. Real-world conditions are usually not optimal, and in most situations, a radio’s actual range will be about 2 miles or less.
How do I find radio range?
That formula is: Horizon in kilometers = 3.569 times the square root of the antenna height in meters. For example, if the antenna height of a radio is at 6 feet (1.82880 meters tall) the horizon is 2.99 miles away (4.83 kilometers) and another radio with the antenna at 6 feet, that equals approximately a 6-mile range.
How far will a 25 watt VHF radio transmit?
For example, a 25-watt marine radio will roughly have a maximum range of 60 nautical miles (111 km) between antennas mounted on tall ships, but that same radio will only have a range of 5 nautical miles (9 km) between antennas mounted on small boats at sea level.
How far will a 8 watt VHF transmit?
Most airband radios are 5 – 8 watts and typically have a range of around 200 miles.
What is the formula for VHF range?
The formula for VHF range taught in flight schools 1 is. $$ d = 1.25 * sqrt{h} $$. where d is the range in nautical miles and h is the height in feet of the receiver above the transmitter.
What is VHF hopping and how does it work?
This system works by receiving a VHF signal on one frequency and simultaneously transmitting it on another, or hopping between multiple frequencies, as a means of secure transmission. This enables you to cover a much wider distance as it is transmitted in both directions between the different operators.
How can I extend the range of my VHF radio?
The range of your VHF radio can be extended by elevating your antenna, increasing the quality of contact. 2. Invest in a rebroadcast system While many challenges in a tactical environment can be avoided, in most instances terranean features aren’t one of them.
How do you find the distance between transmitter and receiver antennas?
Providing that the ground between transmitter and receiver is flat the following formula gives the distance to the horizon: where H is the antenna height above the ground in feet and D is the distance to horizon in miles. You then have to double this distance so that both antennas see the horizon.