The BB machine was gradually withdrawn from history with the advent of cell phones, and is now used in very few countries, but there are still some backward and poor countries using this business. As in some poor African countries, BBs are in high demand. Because these countries are backward in communication, social development is lagging behind, and poverty is widespread, cell phones are newer products that they simply cannot afford to buy, and BBs are inexpensive, subject to little interference, have strong signals, and consume less power, so they have become a popular product in these countries.
With the popularity of cell phones and the rapid changes in modern technology, BBs have been abandoned by most countries. But what is unexpected is that the United States, 85% of the hospitals are still using the BB machine communication, each doctor is hanging on the BB machine, waiting to be paged, is this the United States backward? Let's take a look, mainly because, the biggest difference between cell phones and BB machines, the phone itself is a source of radiation, in the hospital some anti-radiation areas, cell phone signals simply can not be received.
In order to be able to search for the signal, the cell phone becomes a powerful source of radiation, but also become a source of interference, can interfere with sophisticated medical equipment, so that these highly sophisticated equipment malfunction and send out the wrong signal. To prevent this from happening. BBs can be used. As BBs work in the VHF band, they have a strong ability to bypass radiation, wide signal coverage, and low transmit power. Reliable transmission can be achieved, the information transmitted is brief and the cost is low, making these hospitals insist on using it. In addition, many walls of the hospital have been done to prevent radiation treatment, cell phone signals simply can not be received, the formation of a number of dead ends without signal, because the BB is through the internal signal forwarding device, that is, the BB can communicate directly with each other without the need for an external base station.
Another reason, doctors distinguish between public and private, work to open the cell phone phone, using the BB machine in the hospital communication, and hospitals have paging stations, so that the work time to find a doctor, it is very convenient, work and life and strictly separate, home from work to use the cell phone, and go to work to use the BB, the public and private, can better take care of the work and family.