Negative Positive
Title: So far, NO LUCK!!!
Review: play YX510 for about 4 days and still no luck to figure how it is working. I have two stories with about 3 bars of outside signal strength. My first floor have 0 to 1 bar. With this device, most of time, not see 'significant' improvement. The antenna is more than 15 feet away the base and outside on the roof. When phone is within half 'feet', I see 3 bars and NO problem to make/receive call. Once away the base, it decreases, 5 feet away, same as without YX-510. No help/support info on their Web site.5-21: find support info on their web site and get support person. Thing are told 1, I WILL NOT get same signal strength as outdoor, 2. vertical distance should more than 15 feet (my is around 15 feet or more). In order to have more bars, I need get high end antenna. 3. It is normal that I have 3 bars (in my case) around the base and 0 or 1 around 5~6 feet away.
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