Differences

This shows you the differences between two versions of the page.

--- nyan:link_budget [2023/12/11 00:39] – river
+++ nyan:link_budget [2023/12/11 14:13] (current) – [Free space loss] river
@@ Line 8: / Line 8: @@
 <file>
-Distance (km)	Distance (nautical miles)	Frequency (MHz)		Loss (dB)
+Distance (km)	Distance (nautical miles)	Frequency (MHz)		Loss (dB)	Fresnel r (m)
-		0.54				434			-85.2
+		0.54				434			-85.2		13.1
-		0.54				869			-91.2
+		0.54				869			-91.2		9.3
-		5.40				434			-105.2
+		5.40				434			-105.2		41.6
-		5.40				869			-111.2
+		5.40				869			-111.2		29.4
-		10.80				434			-111.2
+		10.80				434			-111.2		58.8
-		10.80				869			-117.2
+		10.80				869			-117.2		41.5
-		16.20				434			-114.7
+		16.20				434			-114.7		72.0
-		16.20				869			-120.8
+		16.20				869			-120.8		50.9
-		21.60				434			-117.2
+		21.60				434			-117.2		83.1
-		21.60				869			-123.3
+		21.60				869			-123.3		58.7
-		27.00				434			-119.2
+		27.00				434			-119.2		92.9
-		27.00				869			-125.2
+		27.00				869			-125.2		65.7
-		32.40				434			-120.8
+		32.40				434			-120.8		101.8
-		32.40				869			-126.8
+		32.40				869			-126.8		71.9
 </file>
+===== Bibliography =====
+  * [[https://www.internetsociety.org/wp-content/uploads/2017/10/Link-Budget-Calculation.pdf]]
+  * [[https://www.erau.ee/et/ultraluehilained/78-uncategorised/477-vhf-uhf-microwave-radio-propagation-a-primer-for-digital-experimenters]]