I tried these antennas on a NetGear Wifi router and a Verizon Fios Modem with wifi. I used Wifi Analyzer 3.9.5 to test the signal. Both wifi signals on both devices are normally -50dbm. They fluctuate but that is the normal signal strength. From what I have read on the Internet, 3 dbm difference in signal strength, depending on which direction, is a signal either 2 times as strong, or 1/2 as strong. Both devices went to -40dbm which seems to signify that the antennas do what they are suppose to do. Now to add a caveat to that information, those were the signals within 10 feet of the devices. Thirty feet away I saw significant fluctuations and about a -45dbm signal strength. Still that appears to mean a doubling of signal strength. My only criticism of the product is that it came with zero, that is ZERO documentation. Not one single piece of documentation was in the box. I went to the Linksys site and the product hasn't been released yet, there did not appear to be any support documentation on the site either. I have to ding them a star for no documentation.
Up to 2X gain than standard antennas for stronger for greater coverage and signal strength than standard antennas
Dual bands deliver up to 4 dBi (2.4GHz) + 7 dBi (5 GHz) per antenna for up to 2x the antenna gain on the 5 GHz band and 1.5x the average antenna gain on the 2.4 GHz band compared to standard antennas
Omni-directional design strengthens the Wi-Fi signal and then transmits it in all directions in a horizontal plane, while optimizing mobile device connectivity
Easy-to-install, these high-gain antennas are compatible with routers featuring an RP-SMA connection
If reviewing a product, it may have been received free of charge. That will NEVER have a bearing on my recommendations.