This antenna is moderately priced and easy to assemble. However, I encountered problems with reception and found the frequency response of the two antennas I purchased varied considerably. The two diagrams submitted show return loss of the two antenna's. If you compare them you can easily see the response is quite different., and I made sure they were assembled exactly the same. Antenna gain in both units is around 2 dB at 400 MHz and 6 dB at 700 MHz; however the response between the low and high frequency limits varies considerably. The maximum gain of the first antenna is at 571 MHz and is 15 - 16 dB. The maximum of the 2nd antenna is at 594 MHz with 20 dB of gain. I can still use them by matching the antenna response to the channels I need to receive; however most people do not have access to a spectrum analyzer, tracking generator, and return loss bridge to make these measurements. I would NOT recommend them except for reception at distances less of than 35 miles.