Dual Band WiFi 2.4GHz 5GHz 5.8GHz 10dBi Magnetic Base MIMO RP-SMA Male Antenna for WiFi Router PCIe Wireless Network Card USB Adapter Security IP Camera Industrial Router IoT Gateway Modem

I use this antenna on a remote PTZ that is about 100m away from my router. Even going through the house, and back to the camera I still get a good strong signal. The magnet is very weak though, so I used some double-sided tape to mount to the flashing.

I didn't gain anything signal- wise from this antenna setup. It was easy to install.

The antenna attached to the WiFi card in my PC is under a metal desk. With this antenna on my desk, the WiFi signal strength improved, connection speed increased from 49 GBPS to 130 GBPS. Winner winner chicken dinner.

It's surprisingly hard to definitively test an antenna, so I went waaay above and beyond to get reliable repeatable real-world results. Wi-Fi signals fluctuate a LOT, so you can't simply look at signal strength with one antenna, and then with another. Variability, for one antenna alone, can be +/-10dBm. In order to completely rule that out, I wrote a custom program to sample signal strength, 500 times, calculating the mean, mode, and average. Instead of measuring just one connection, to my home router, I recorded 500 samples, for every hotspot in the neighborhood (3 at 5.8Ghz, 3 at 5Ghz, 18 at 2.4Ghz) on my dell laptop's internal antenna. I choose 500 samples, because that was the number of samples it took to overcome outlier readings, swings from high to low, cross station interference, and other influences. The average, at 500 samples, reliably matched (within 1dBm) the average for another 500 samples, for all 24 hotspots. When attached to that same internal Wi-Fi card, these antennas gave a 5dBm boost at 2.4Ghz, no improvement at 5Ghz, and a 7dBm LOSS at 5.7Ghz. It took a couple of days, to get the analysis program written, but it's awesome to finally have solid definitive numbers to compare. I'd say this antenna is a mixed bag. It is clearly tuned for 2.4Ghz, because performance at 5/5.7Ghz is terrible. This might even be a mislabeled old 2.4Ghz only antenna. Modern 2.4Ghz/5Ghz antennas are designed to be full-wave length at 5Ghz, and half-wave length at 2.4Ghz, but, a full-wave length 2.4Ghz would only pick up 2.4Ghz and 1.2Ghz at half-wave length. Bottom line, the poor 5Ghz reception seems to point at this being a full-wave length 2.4Ghz antenna. I tested a different brand of antenna (for indoor use) that was actually tuned for 2.4/5/5.7Ghz, and it showed gain at all 3 bands, in this very same setup. I will say this, having full-wave, on the most well populated band (2.4Ghz), which travels further than 5/5.7Ghz, is ideal for car/mobile applications. This may be the best choice for wardriving or geomapping. Enjoy.

My stupid cat. He was the one that did it. Long story short, he decided my wi-fi router (which was sitting on top of my desk for over two years) was suddenly in his way. So, he decided to teach it a lesson and shove it off. This resulted in a broken antenna and various scrapes. Still functional but the signal sucked due to the antenna. I needed to find a new one. Enter this antenna. Easy to hook up, just unscrew the old one and screw in the new one. The antenna cable is long enough to use the magnet to attach it to my desktop computer, getting good ground and limiting interference. Signals drastically improved. Even better than the original. Let's just hope the cat doesn't notice....