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Satellite Internet forum › Dish pointing and alignment › Satellite Tracking

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Satellite Tracking

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techtest

Ex Member

Jan 24^th, 2010 at 7:57am

. Dear Sir ,
We would like to track thaicom 5 (78.5 E) satellite for Uplink transmission . We are using 3.8 mtr prodelin Dish for tracking. And Using C-Band Uplink transmission . So coud ples give the details of the frequency and all to track the for Thaicom 5 .Can we use Ku band frequency to track the dish and later we can put BUC for uplink transmission . Our Location is Kabul, Afgahnistan.
Thanks in advance
techtest

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Eric Johnston

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Reply #1 - Jan 24^th, 2010 at 1:34pm

Tracking:

You will be pleased to know that Thaicom 5 is in a stable, controlled inclination, geostationary orbit at 78.5 east orbit longitude. On 21st Jan 2010, it's inclination was 0.04 deg, so there is no requirement for you to use tracking with a 3.5m diameter dish.
THAICOM 5 � � � � � � �
1 29163U 06020B � 10021.97027424 -.00000104 �00000-0 �10000-3 0 �7479
2 29163 � 0.0419 243.3712 0003935 �60.9560 244.6736 �1.00271470 13474

You don't need motors and a tracking system. �You just need to accurately point the dish once and then leave it fixed. Use this page for dish pointing in Afghanistan. You can do the alignment by receiving either C or Ku band carriers. �Here is a listing of some carriers active now: http://www.lyngsat.com/thai5.html

C and Ku band operation:

This page Technical details for Prodelin antennas gives details of Prodelin C and Ku band linear polarisation feeds. �There are suitable 2 port (tx/rx) linear feeds for C and Ku bands, but NOT for operation at both C and Ku band simultaneously. �Such dual band feeds (4,6,12,14 GHz) do exist from other feed manufacturers and may be very expensive. Work out what are your actual requirements. �You need to transmit at 6 GHz linear polarisation. �Only one tx polarisation ? �Do you need to receive at 4 GHz? �One or two polarisations ? �Ku band; receive only or tx/rx ? �Ku Polarisations ? �Think about what you must have and what might be nice to have and then you will be better prepared to discuss with Prodelin or other feed manufacturer. I would consider having two antennas, one working at C band and one working at Ku band.

Frequencies:

Contact Thaicom to find details of your uplink frequency, eirp and polarisation, and their general specifications relating to your transmissions: spurii, side-lobes, x-pol etc.

Best regards, Eric

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techtest Ex Member	Reply #2 - Feb 7^th, 2010 at 3:09pm thanka you sir for your information . We want to Transmit only on C - band .
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