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Hi,

I would rather use the term “repeater” and not “Booster” as GSM works up in the high frequencies (which is higher than UHF). The repeater consists of a control unit, an outdoor aerial and an indoor aerial. The repeater will connect the mobile to the GSM network via the indoor and outdoor aerials.

What the repeater will not do is to relay signals if the quality is really poor.

I have seen plenty of situations where people have to climb the small hill behind the office to make calls. Where this situation occurs, then a repeater will be a viable option.

Before making any investment into kit, its sensible to identify a spot where an outdoor aerial may be placed and use a GSM phone to make some calls. If calls can be made, then investment is recommended. If call quality is poor, then the prospect of a repeater improving the situation is small.

Assuming the test has been passed, the outdoor aerial will extend the coverage through a local cell created by the indoor aerial. This sort of technology will support a number of phones in a small office.

There are plenty of companies making this sort of kit. Some cheap systems will be enough for a small office, but others can create large scale cells for events such as trade exhibitions.

Mark