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Turnaround Frequency Calculation

Printed From: Satcoms UK - Satellite Communications Engineering
Category: Satellite Communication Tutorials
Forum Name: Tutorials - Course 7 - Useful Calculations
Forum Description: Calculations for Satellite Communications Engineers: Ant Gain, Eb/No, BER, EIRP, G/T & C/No.
URL: http://www.satcoms.org.uk/satellite/forum/forum_posts.asp?TID=769
Printed Date: 16/July/2019 at 22:52


Topic: Turnaround Frequency Calculation
Posted By: Satcoms UK
Subject: Turnaround Frequency Calculation
Date Posted: 29/September/2008 at 12:04
Turnaround Frequency Calculation
 
The turnaround frequency is calculated by subtracting the satellite translation frequency from the uplink Transmit frequency.
 
This is used to calculate the Rx downlink frequency that the Transmit signal will return at, this is also known as the Return link or Downlink frequency.
 
Rx Freq (T/R) = Tx Freq - Trans Freq
 
Example:
 
Tx Freq = 10.5 Ghz
 
Satellite Translation Freq = 650 MHz
 
Rx Freq = 10.5 - 0.65 = 9.85 GHz.
 
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