I was a bit sceptical that this kit was going to work. Having read reviews of the other versions this version seemed to be the best in terms of covering the whole fm spectrum, other versions cover only 8 channels, all at the lower end range. A previous review suggested that it would work better in the lower end of the frequency spectrum at around 87Mhz but I found the reverse was true and got better results in the 107Mhz region. It might depend on which area of the country you are using it in. Build quality is not impressive, but for the price what do you expect. The fact that it does not require batteries to work is a plus. To coin a phrase, it does what it says on the tin.