DVB modulator

iBoston

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• Mar 20, 2017

• #1

Anyone ever played with a DVBS modulator? I was thinking of doing some tinkering.
I was thinking of taking a RCA signal and running it through a DVB modulator so that i could then pick up the video/audio feed on any DVBS satellite receiver.

I included a picture of a DVB modulator (back panel) and was wondering how you would feed analog audio/video into it.. I assume the Video would go into one of the BNC connectors, would another BNC be for audio?

Has anyone done this before?

 

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iBoston

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• #2

Well, doing some research, it looks like you need an Encoder to work with the Modulator. Still researching...

 

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Titanium

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• #3

Correct, an encoder and modulator is needed to provide a transport stream of a live AV source to a DVBS receiver. Often use a Dektek DVBS2 modulator PCI card to play out TS files for STB testing.

 

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iBoston

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• #4

More research leads me to believe, you need an encoder unless you have something that outputs in DVB-ASI. So, if my understanding is correct I could possibly use the DVB-ASI output on the DCII receiver into the ASI in-port of the modulator to then transfer a DCII signal to a DVBS signal. ??

Otherwise, i would need an encoder and input the analog video into the encoder which then sends the signal to the modulator into a DVBS signal.

 

Titanium

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Correct. If your source is already encoded, feed the modulator and output a DVB compliant carrier to be tuned with a DVB receiver. If a closed distribution system use LO: 0 and the IF between 950-2150MHz.

 

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iBoston

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• #6

Titanium said:

Correct. If your source is already encoded, feed the modulator and output a DVB compliant carrier to be tuned with a DVB receiver. If a closed distribution system use LO: 0 and the IF between 950-2150MHz.

Click to expand...

Your IF between 950-2150 Mhz is an important point, as I see there are IF outputs which are 75-150 Mhz, and under this situation, i would need an L-band output.

 

Titanium

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• #7

A FTA DVBS receiver tuner IF range is 960-2150MHz. The modulator's RF output needs to be within this range. The modulator may have an IF output, but that would not be used with a DVBS STB.

 

iBoston

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• Mar 25, 2017

• #8

Well, it looks like that will just remain a fantasy thought. I cannot seem to find a modulator that i believe would do the trick for less than $200.oo and that's a bit too steep for Putz-in.