A typical VHF station operates at about 100,000 watts and has a coverage radius range of about 60 miles. A UHF station with a 60-mile coverage radius requires transmitting at 3,000,000 watts.
How far will a handheld VHF radio transmit?
For normal handheld use (at five-watt transmit power), figure on a three-to-eight mile range from a small boat, compared to 15 to 20 miles with a fixed-mount radio (at 25 watt transmit power.)
How far does VHF transmit?
Marine VHF radios work on a line-of-sight basis. That is, they can transmit and receive to and from another antenna as long as that antenna is above the horizon. How far is that? Standing in the cockpit of a boat, the distance to the horizon for most adults is about three miles.
How far will a 5 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 can a 2 watt radio transmit?
So, a 2-watt walkie-talkie might broadcast within a range of 1.5 miles; 3 watts = 2 miles; 4 watts = 2.5 miles; 5 watts = 3 miles; and so on. Actual distances may vary widely based on weather, UHF vs. VHF, etc. But these are good, general rules of thumb to go by when shopping for a new radio system.
Do you need a Licence for a handheld VHF radio?
You must have a separate Ship Portable Radio Licence for each hand held VHF DSC radio. This is because each individual radio is given a separate identity. … So, it cannot be covered by a normal Ship Radio Licence, as this does not impose any territorial restrictions.
Do police use VHF or UHF?
Police broadcast on frequencies in the UHF band. You are legally allowed to listen to unencrypted transmissions in these bands, but you need a license to broadcast.
Is VHF or UHF better?
In general, UHF radios are better for indoor use because their wavelengths are shorter and better able to penetrate through steel and concrete. … VHF radio signals tend to degrade more than UHF signals indoors.
How can I increase the range of my VHF radio?
The range of your VHF radio can be extended by elevating your antenna, increasing the quality of contact. While many challenges in a tactical environment can be avoided, in most instances terranean features aren’t one of them.