Flashing a diamond ring is all good and well, but if it’s too puny to see, what is the point? This seems to be the mindset Archos was in when it forged its mammoth 705 Wi-Fi portable video player. If you like your mobile audio and video served up in super-sized portions, open your eyes wide because you are about to be dazzled. Unfortunately, open your wallet, too, as this gem doesn’t come cheap, especially after shelling out extra for accessories you’ll actually want.

When you see how the 705 sparkles, though, you will understand why. Above all else, the 705 is gigantic (4.96 x 7.05 x 0.775 inches [HxWxD]) by mobile device standards. A 7-inch touchscreen display (800 x 480) lets you view movies, home videos, and photos. You can also watch TV you record using a DVR (digital video recorder) function which complete with personal TV guide that saves programming straight to the player. You also get a full-fledged digital audio player, two integrated speakers, and a palm-sized remote. Further, an integrated kickstand means you can set the 705 down, and the 3.5mm headphone jack doubles as a composite video out port to display images on a TV.

Need more bling for your money? No problem. The 705 also displays PDFs, plays Flash-based games, and has an excellent user interface and file browser to navigate content. Better, the 705’s built-in Wi-Fi is actually useful, letting you stream audio and video from a networked computer; whip around the Web via a Flash-supporting Web browser; and download movies, TV, and audio from Archos Content Portal. More bling? How about two built-in USB ports? I connected a digicam and moved photos and video to the 705’s hard drive. And then there’s the 705’s arguably most alluring trait: the scores of audio and video formats it supports, including MPEG-4, AVI, WMV, DivX, H.264, MPEG-2, MP3, WMA, protected WMA, WAV, AAC, and AC3.

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Tags: Wi-Fi

WiFi networks can reach only so far.

The range of wireless equipment such as the radios and antennas that are built into consumer equipment such as the AirPort Extreme Base Station can vary from network to network, even minute to minute. But when one node of a WiFi network is too far from another, communications between the two break down, and your network doesn’t work.

While WiFi signals are supposed to reach 150 feet in any direction from a gateway, that optimistic figure is rarely reached indoors. One common cause is absorption. Building materials between two points can soak up so much of the signal that one device can’t detect another. Brick is particularly bad for WiFi because brick retains water, which readily absorbs WiFi signals.

As a result, a gateway that delivers a perfect high-speed connection to a laptop from 500 feet away when it has a direct line of sight might be invisible to a laptop that’s 50 feet away when there’s a brick wall between them.

There are two main indicators that your wireless network is having range problems. First, WiFi networks you know are there don’t show up in the wireless menu. Second, when you do connect to a network, the wireless icon in the system menu bar shows just one or two signal-strength bars and frequently slips to no bars.

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