T-12 tracking frequency

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nkast Member ★★ Offline Posts: 44	May 12^th, 2010 at 6:45pm Hi, can anybody advice on the telstar T-12 tracking frequency using a Seatel 4006 in north sea. regards
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wbailey Senior Member ★★★ Offline Posts: 62	Reply #1 - May 12^th, 2010 at 8:27pm lyngsat
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Eric Johnston

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Reply #2 - May 12^th, 2010 at 10:56pm

It will depend on what you are using as a tracking receiver.

1. �If your tracking receiver is DVB-S (satellite TV) type receiver you will need to find a suitable TV carrier that is likely to be there for long time. Look for a carrier on the same polarisation and in the same block of Ku band as your wanted traffic carrier. � See https://www.lyngsat.com/t12.html �Note that TV carriers do change from time to time and your service will fail when this happens, so be ready with alternatives. Don't choose a TV carrier that is approx the same frequency and symbol rate as one on any nearby satellite, unless your receiver is locking based on unique program PID code.

2. �If your tracking receiver is a CW beacon receiver then you need to know the Telstar 12 tracking beacon frequency. �Contact Eutelsat tech support. �If the beacon is linear then you need a beacon on the same polarisation as your wanted carrier, or a circular polarisation beacon. �Check that your LNB local oscillator freq and the beacon receiver tuning are compatible. �You must use a PLL LNB, preferably external reference, as the beacon will be low level. �� Read Seatel manuals regarding how to connect the carrier lock and signal level signals to the Seatel controller.

3. �Use of your traffic modem as tracking receiver. �If your traffic modem can output lock and level signals then you might use that as the tracking receiver.

Best regards, Eric.

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« Last Edit: May 13^th, 2010 at 7:44am by Admin1 »

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