QuickerTek has announced their second generation higher gain 5dBi Tri-Band Antenna upgrade kit for the Apple 802.11n Extreme Base Station and the Time Capsule 500GB, 1TB and 2TB models.

The company says they found a way to fix the modest receptive sensitivity and transmission capability by bringing the antennas outside the box. In-house testing showed up to three times better signal strength then that of the built-in antennas, according to QuickerTek.

The 5dBi Tri-Band Antenna Do it yourself kit can be ordered from the company website (http://www.quickertek.com/). Like most QuickerTek products, the 5dBi Tri-Band Antenna kit has a one year parts and labor warranty. Pricing ranges from US$129.95 to $480, depending on what you’re upgrading and how much work you’ll be doing yourself.