WiMAX radio is the heart of WiMAX. Each one of the radios has a transmitter and a receiver. It would typically produce electrical oscillations at the frequency between 2 to 11 GHz. A radio is actually similar to a router or a bridge. What composes a radio are circuit boards which in turn have contain chip sets. It is also operated by a software.
Besides the antennas, radios are the other vital part of the WiMAX architecture. Most products for WiMAX provide base station radio apart from the antenna. Having separate radios and antennas presents some advantages. For one the radio is spared from exposure to extreme heat and cold. It also avoids extreme humidity. This way radios are maintained facilitating radio performance and durability. With the antenna located outside, it enables wireless connection to perform better. The connection between the transmitter and the receiver is improved particularly in line of sight situations.
What connects the antenna to the radio is a cable commonly known as the pigtail. One theory that operates on pigtails is that the longer it is the more signal is wasted when it travels from the antenna to the radio. A 10-feet LMR-400 cable, for example, would lose about 1 dB of signal. One must therefore opt for the shortest possible pigtail.
Positioning of the radio could also make a great impact of its performance. One must also take note that the radio also generates heat on its own. Insulating it would help make sure that it doesn’t get exposed to extreme cold or heat.