Apple Time Capsule owners looking to extend the range of their network backup device may want to look at QuickerTek’s newest offering, the Time Capsule TriBand Antenna. It costs $129.95 (QuickerTek also offers upgraded units or installation for an additional fee).
The upgrade comprises three 3dBi antennas that are positioned externally from the Time Capsule case. The antennas provide better signal range and greater speed during backup, according to QuickerTek, which claims that they can provide up to 50 percent greater wireless coverage than the stock configuration. The Time Capsule TriBand Antenna includes 2.4-foot coaxial cable so you can position the antenna array where you can get the best performance.
The kit includes detailed instructions, though QuickerTek advises that it should only be done by someone with prior base station upgrade experience.