Hello Mark, http://www.fament.com/wireless/calculators/wavelength.php
Wavelength in 2.4Ghz is 12.49cm and in 5.8Ghz the wavelenght is 5.17 centimeters. Best regards, Eje Gustafsson mailto:[EMAIL PROTECTED] The Family Entertainment Network http://www.fament.com Phone : 620-231-7777 Fax : 620-231-4066 - Your Full Time Professionals - eBay UserID : macahan --- searchable smartBridges mailing list archive. http://www.mail-archive.com/smartbridges40part-15.org/ -- MK> You can build an antenna to be grounded... Or not. MK> The lower frequency stuff - particuarly that under 500 Mhz, often is created with the intention of having the earth itself be part of the ground plane, to help propagate the transmission. MK> Because of it's incredibly shorter wavelength, and the many wavelengths above earth ground, the effect on the radiation pattern is minimal. While a 10 or 40 or 160 meter antenna is unlikely to MK> be more than anywhere from 1/4 (or less) to maybe 5 wavelengths from the earth, there is a coupling that exists and is designed into the antenna. Not grounding means that antenna is slightly MK> "mis-wired" compared to its design. MK> I don't know the wavelength of 2.4 Ghz or 5.8 Ghz, but I'm sure that a vertical omni at 40, 60, or 100 or even 150 feet from the ground is so many wavelengths away the ground interaction is MK> pretty much non-existent. MK> NEOFAST.NET MK> North MK> East MK> Oregon MK> FAST MK> Net MK> mark(at)neofast.net MK> ----- Original Message ----- MK> From: phantam MK> To: '[EMAIL PROTECTED]' MK> Sent: Friday, July 11, 2003 3:34 PM MK> Subject: [smartBridges] Earthing MK> How come on citizen band radios and many other frequencies the SWR is better when the antennas are properly earthed but in 2.4ghz no antennas are earthed. ? Wouldn't this clean up the signal MK> and provide farther signal I just got to talking to a EX army engineer and he said that he doesn't understand why not and wants to try it but cant seem to find a SWR meter that can read 2.4ghz L MK> Chris MK> --- MK> Outgoing mail is certified Virus Free. MK> Checked by AVG anti-virus system (http://www.grisoft.com). MK> Version: 6.0.498 / Virus Database: 297 - Release Date: 7/8/03 -- [This E-mail scanned for viruses by Declude Virus] The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
