HF communications are best suited for long distance communication between ground operators and base stations. … VHF communications are best used for transmission of data between radio operators within line of sight over flat ground. VHF radio transmissions work best for line of sight communications.
Can HF talk to VHF?
In the field, operators can make contact over short line-of-sight distances using VHF/UHF radios. … However, to reach out to a distant base several hundred kilometres away, HF radio communication is more suitable.
Should I use VHF or UHF?
VHF radios are suited for long distances in and outdoor use. UHF radios operate at a higher frequency. This makes them ideal for wireless communications that need to penetrate through buildings, walls, or concrete. UHF radios are suited for indoor communication solutions, where obstacles are easily penetrable.
Are police radios UHF or VHF?
Police radios operate in a 700/800 MHz UHF band. This gives them a considerable amount of range which is pretty good in urban areas.
Can VHF talk to UHF?
VHF and UHF Walkie Talkies can’t talk to each other. The terms UHF and VHF refer to the “wavelength”. … That said, if a VHF wave and a UHF wave are transmitted over an area without obstructions, then the VHF wave would travel around twice as far. Since the VHF frequency waves are bigger, then the antenna must be bigger.
Can FRS talk to VHF?
Both FRS and GMRS radios operate in the UHF band, while most of the national park and guiding services operate on the VHF band. UHF radios can be programmed to operate on the FRS frequencies, but beware: the FCC has extremely high fines for creating interfering transmissions.
Who uses UHF?
UHF is typically used by public safety officials like fire, police, and EMS with tv channels of 77-80. UHF is used for common purposes like phones, televisions, and ham radio operators.
Who uses HF radio?
The band is used by international shortwave broadcasting stations (2.310 – 25.820 MHz), aviation communication, government time stations, weather stations, amateur radio and citizens band services, among other uses.
Does VHF or UHF have longer range?
For most applications, lower radio frequencies are better for longer range. A broadcasting TV station illustrates this. 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.