Re: Wifi Booster for less than a buck.
Russell Senior <[email protected]> 20 Nov 2007 15:34:47 -0800
| Newsgroups | gmane.network.wireless.portland.general |
|---|---|
| Message-ID | <[email protected]> |
>>>>> "Tom" == Tom Higgins <[email protected]> writes: Tom> Someone give this a try, id love to see what the hard numbers Tom> are. If I get a break in the holidays I might try it on an old Tom> linksys duck. I've cobbled together something similar while testing 11a radios and needing something to radiate *something*. What the video is showing is equivalent to about a 5 dBi antenna, which is where the "twice the range and twice the power" is coming from. 5 dBi is "twice the power" compared to 2 dBi, as your power doubles for every 3 dB. However, your power drops as the square of the distance (2 squared is 4x) or about 6 dBi for every doubling of distance, so that part is wrong. Bearing in mind my non-expertness in RF, I'd be suspicious of losses in that solder joint too, if it isn't done cleanly. The nice book http://wndw.net/download.html has some material on antenna construction and theory. It even points at some software NEC2. See: http://wndw.net/pdf/chapter4.pdf -- Russell Senior, Secretary [email protected] -- The Personal Telco Project - http://www.personaltelco.net/ Donate to PTP: http://www.personaltelco.net/donate Un/Subscribe: http://lists.personaltelco.net/mailman/listinfo/general/ Archives: http://news.gmane.org/gmane.network.wireless.portland.general/ Etiquette: http://www.personaltelco.net/index.cgi/MailingListEtiquette