Ottawa Canada Dear Derek and list:
A DBM is decibels per meter. It is one tenth of a Bell, a unit of sound volume discovered by Alexander Graham Bell of telephone fame. It is roughly the way the human ear discerns changes in sound volume and is ten times the log of the power ratio. Being logarithmic, it is different than the European unit of sound volume which I forget the name of, that is linear. This unit of measure is also applied to things like radio signals for wireless cards. I forget if -60 DBM is louder or fainter than say 1 DBM. I think it is louder. If the DBM figure is positive, it refers to attenuation, which is a reduction in loudness. Giving a signal strength in DBM is a more precise way of stating its strength as opposed to loud and clear or barely perceptible. Take care. Brian Brian K. Lingard email: [EMAIL PROTECTED] Skype: ve3yiab2ji15 tel: +1 (613) 247-0665 New York NY Tel +1 (646) 797-2862 FAX +1 (613) 247-9998 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.11/1200 - Release Date: 27/12/2007 1:34 PM ___ Replies to this message will go directly to the sender. If your reply would be useful to the list, please send a copy to the list as well. To leave the BrailleNote list, send a blank message to [EMAIL PROTECTED] To view the list archives or change your preferences, visit http://list.humanware.com/mailman/listinfo/braillenote
