VHF radios work by the line of sight principle
VHF radios work by the line of sight principle
Because VHF signals have a line of sight limitation.
history of vhf radio
You need a VHF radio antenna, a VHF radio receiver and of course a station broadcasting on the VHF frequency.
VHF is "line of sight" communication only, as the signal travels in a straight line (like visible light). A taller antenna will be able to "see further" over the horizon and thus have longer range.
The PRC77 radio operates on 30.000 to 75.95 MHz. If the Harris radio operates on any of the same frequencies (I know you said it's VHF, but VHF covers 30 to 300 MHz), then it can.
VHF is in the range 30 to 300 MHz.
VHF signals are essentially Line of sight transmissions (LOS). Like all radio waves they are attenuated by objects in their path. Raising the aerial above the level of the interferring objects while still maintaining an integral waveform (Usually using an artificial ground plane or aerials less than 1/2 lambna), reduces the attenuation and prevents distortion of the polarization pattern thus leading to an efficient transmission path.
Very High Frequency.
Personal Floatation Device for each person aboard
VHF channel 16