![]() ![]() ![]() The ACA states that 4W EIRP is the maximum power allowed in Australia. A maximum of three networks can occupy this spectrum without interference. There are 13x 22 MHz wide channels (5 MHz apart) in the 83.5 MHz allocation of the 2.4 GHz band. IEEE 802.11b (Wi-Fi) uses Direct Sequence Spread Spectrum, with data rates up to 11 Mb/sec. In case you need them - here are the 802.11b wireless network channel details: Or for those who prefer VSWR graphs (1.8:1 at 2480MHz): The return loss measurement (10.4dB at 2480MHz) not crash hot: Looks like I should lengthen everything by 1mm or so and try again to bring the resonance point down from Wireless Ch 13++ downwards!. Here are the measurements for my first attempt at one of these things using an Anritsu antenna analyser at work during lunchtime. In actual fact I noticed the noise floor drop more than the signal gain - but that amounted to more S/N. A quick check with Netstumbler using my own access point at the other side of the house indicated around 6dB gain - or rather the S/N was improved by 6dB. By using 8 elements as in the above design - a gain of 6dB was expected. ![]()
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