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Is a dual band booster better than a single band booster? Even though it would seem that a dual band booster is better than a single band booster, after all, this device will amplify all the time, there are valid reasons that a dual band booster is not better than a single band booster and will almost always have inferior performance and practical reasons that it is not needed. 1-virtually all consistently poor coverage areas in North America occur in rural and remote areas where only Cellular 800 Mhz signal is present and only Cellular 800 systems are deployed, therefore a dual band booster is not required in this instance. A cellular 800 Mhz booster is sufficient. 2-PCS 1900 is almost always found in major cities and even if you attach a dual band or PCS 1900 booster to your phone, the coverage in urban areas is so dense that the network will command the cell phone to power down as you approach the PCS area and the booster will have no effect. In a sense it would be like having a car with a 700 horsepower engine but you can't get out of traffic. 3-if you have a single band PCS only phone like T-Mobile for example, a dual band booster would not ever operate in Cellular 800 Mhz because the phone does not operate in this band, therefore, a dual-band booster is not required. A single band 1900 Mhz booster is required. 4-a booster is an amplifier and as such, it has the inherent deficiency of creating "noise" in the normal course of amplification. All amplifiers, (radio frequency amplifiers, stereo amplifiers, hearing aid amplifiers) use electrical energy to amplify and this energy creates thermal noise that is generated along with the increased signal (amplified signal/sound) that is desired. This "noise" causes the device to become less sensitive and this translates to inferior performance when the signal that is being amplified is at a very low level; a cell phone signal that is very far from a tower for example. The 800 Mhz section and the 1900 Mhz sections of a dual-band booster are always "on" and even though only one section is being used at any given time the "noise" that is generated by the unused section is present regardless. 5-a truly well designed and well produced dual-band booster should cost about twice as much a single band amplifier because it is two amplifiers in one housing. An inexpensive dual-band booster, one that sells for a price similar to a single -band booster, will always have some deficiency.
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