The main purpose of a VHF antenna is to provide a radiator for the power that the transmitter in the radio produces and to radiate this energy in the correct direction .
Read moreHow do VHF radios transmit?
To use your VHF, turn it on and pick a channel, set the squelch to the point where you don’t hear any white noise, and begin talking . Things to remember when you are on the radio: Monitor channel 16 when you are not actively in conversation with someone else.
Read moreDoes VHF need line of sight?
VHF radio waves propagate mainly by line-of-sight , so they are blocked by hills and mountains, although due to refraction they can travel somewhat beyond the visual horizon out to about 160 km (100 miles).
Read moreHow do you transmit VHF?
Use an “open channel” to performance the check (channels 68, 69, 71, 72 and 78A). Turn radio to one-watt power setting, and key the microphone. Call “radio check” three times, followed by your boat name and location. Wait for a reply confirming someone has heard your transmission.
Read moreWhat affects VHF radio communication?
Below we will discuss a few of the most common factors found to affect VHF communications: Transmitter Power, Intervening Topographical Features, and what can be considered to be the most important factor affecting VHF range, antenna height .
Read moreWhat is VHF and UHF?
VHF represents “Very High Frequency” while UHF represents “Ultra High Frequency.” The FCC also determines who can operate in each band and who has priority if more than one user is operating.
Read moreWhich wave is used for VHF communication?
Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz) , with corresponding wavelengths of ten meters to one meter.
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