Tinkering with a mobile/cell phone repeater booster, very high-tech RF
Tinkering with a mobile/cell phone repeater booster, very high-tech RF. I have been tinkering with improving mobile phone reception in remote areas (or buildings that have poor phone reception). There are two main ways to do it. First, an external antenna is mounted on the vehicle with a cable to an internal antenna in a phone cradle. The external antenna is much better than the phone antenna and away from the car shielding. I have this system installed in our camper and it worked very well on our trip to Winton in outback Qld. My mobile is one bar better than my friend's phone. Cost~$400 plus fitting. Second, as above but with a booster. The booster is a bidirectional amplifier with additional filtering. The boosters are carrier specific, so always use a Telstra one for remote areas. The boosters allow all phones to use them. There is a teardown of one of these, see below and they are very sophisticated. I have been playing with one with my test gear just to see how they work. Am