The primary mode of propagation for VHF radio waves is through direct waves . These travel in a straight line, becoming weaker as distance increases. Transmitting and receiving antennas must be able to ‘see’ each other for communications to be effective, so antenna height is critical in determining range.
Read moreWhat causes VHF propagation?
This is the result of the movement of cool, humid air shortly after sunset when the ground air cools more quickly than the upper air layers . The same action may take place in the morning when the rising sun warms the upper layers.
Read moreWhat is the range of a 1 watt UHF radio?
Range – 1 watt power – 7Km The power is switchable from 1 down to 0.5 watt output for extra long battery life.
Read moreHow do I extend my UHF radio range?
Three Tips for Extending Two Way Radio Range
Read moreWhat radio has the longest range?
1. Motorola T470 2-Way Radios . The T470 is a powerful option from Motorola; it boasts an up to a 35-mile range, and it has 22 channels and 121 privacy codes to more easily stay in touch with your party. The channels include FRS and GMRS.
Read moreWhich is better VHF or UHF radios?
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.
Read moreWhat 2-Way Radio has the longest range?
What 2-way Radio Has the Longest Range. From the products in this review, the one that can transmit the longest range is the Midland GXT1000VP4 . It is good for up to 36 miles in open spaces without obstructions.
Read more