[QUOTE=zahmatksh;342665]
[RIGHT]
[CENTER][B]Line-of-Sight[/B][/CENTER]
[TABLE="width: 74%, align: center"]
[TR]
[TD][TABLE="class: sidebar_text_9, width: 595, align: center"]
[TR]
[TD="width: 15%, align: center"][B]Line of Sight Distance Between Antenna Towers[/B][/TD]
[TD="width: 12%, align: center"][B]Height of Tower to Avoid Flat Earth Curvature[/B][/TD]
[TD="width: 45%, colspan: 2, align: center"][B]Tower Height Required Over Tallest Obstacle In Line-of-Sight to Provide
60% Fresnel Zone Clearance[/B][/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"][/TD]
[TD="width: 12%, align: center"][/TD]
[TD="class: small, width: 23%, align: center"][B]2.4GHz 802.11b/g[/B][/TD]
[TD="class: small, width: 22%, align: center"][B]5.8 GHz 802.11a[/B][/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]8 Miles[/TD]
[TD="width: 12%, align: center"]10 feet[/TD]
[TD="width: 23%, align: center"]33[/TD]
[TD="width: 22%, align: center"]25[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]10 Miles[/TD]
[TD="width: 12%, align: center"]15 feet[/TD]
[TD="width: 23%, align: center"]38[/TD]
[TD="width: 22%, align: center"]30[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]12 Miles[/TD]
[TD="width: 12%, align: center"]20 feet[/TD]
[TD="width: 23%, align: center"]43[/TD]
[TD="width: 22%, align: center"]35[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]14 Miles[/TD]
[TD="width: 12%, align: center"]25 feet[/TD]
[TD="width: 23%, align: center"]48[/TD]
[TD="width: 22%, align: center"]40[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]16 Miles[/TD]
[TD="width: 12%, align: center"]30 feet[/TD]
[TD="width: 23%, align: center"]53[/TD]
[TD="width: 22%, align: center"]45[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]18 Miles[/TD]
[TD="width: 12%, align: center"]40 feet[/TD]
[TD="width: 23%, align: center"]63[/TD]
[TD="width: 22%, align: center"]55[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]20 Miles[/TD]
[TD="width: 12%, align: center"]50 feet[/TD]
[TD="width: 23%, align: center"]73[/TD]
[TD="width: 22%, align: center"]65[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]22 Miles
[/TD]
[TD="width: 12%, align: center"]60 feet[/TD]
[TD="width: 23%, align: center"]83[/TD]
[TD="width: 22%, align: center"]75[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]24 Miles[/TD]
[TD="width: 12%, align: center"]70 feet[/TD]
[TD="width: 23%, align: center"]93[/TD]
[TD="width: 22%, align: center"]85[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]26 Miles[/TD]
[TD="width: 12%, align: center"]80 feet[/TD]
[TD="width: 23%, align: center"]103[/TD]
[TD="width: 22%, align: center"]95[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]28 Miles[/TD]
[TD="width: 12%, align: center"]100 feet[/TD]
[TD="width: 23%, align: center"]123[/TD]
[TD="width: 22%, align: center"]115[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]32 Miles[/TD]
[TD="width: 12%, align: center"]125 feet[/TD]
[TD="width: 23%, align: center"]148[/TD]
[TD="width: 22%, align: center"]140[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]34 Miles[/TD]
[TD="width: 12%, align: center"]150 feet[/TD]
[TD="width: 23%, align: center"]173[/TD]
[TD="width: 22%, align: center"]165[/TD]
[/TR]
[TR]
[TD="width: 15%, align: center"]40 Miles[/TD]
[TD="width: 12%, align: center"]200 feet[/TD]
[TD="width: 23%, align: center"]223[/TD]
[TD="width: 22%, align: center"]215[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[/TABLE]
سوال ([B]Line-of-Sight[/B])
[B]جدول بالا به چه منظور مورد استفاده قرار می گیرد ؟[/B]
[/RIGHT]
[/QUOTE]
این جدول برای این بکار میره که بین دو لینک شما یک fresnel zone دارید که در بصورت یک محدوده بین دو انتن بر قرار میشود که در صورت کامل بودن این محدوده ما ارتباط قوی تری داریم و ارتفاع ان برای انهنای زمین توضیح داده شده که بسته به طول لینک در چه ارتفاعی ما این مقدار محدوده را به دست می اوریم
اقا سامان نمیدونم چه قدر واضح توضیح دادم اگه مبهمه به فارسی روان ترجمه کنید:D