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Ultimate Geek


# 32202 16-Apr-2009 09:00
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Hi!

I have the following setup:
- one sat receiver, one dish, 2x LNBs, 1x 22kHz switch, system working fine.
- one tv aerial (into my HTPC, for Freeview HD)

I know you can bring only one cable inside the house, using a sat/aerial diplexer, then the same device splits the signal back into sat and tv cables to feed into the tv and the sat receiver.

My question: how does the diplexer work with the 22kHz signal? Can it pass the 22kHz signal or not? On the diplexer it says "9 - 2300MHz". Does it mean it does not pass any signal less than 9MHz? Or maybe the signal loss is quite significant outside those limits? I would say the 22kHz signal will do its job even with significant atenuation due to 2x diplexers installed. What do you think? Cable run would be 15m from tone switch / diplexer to the indoor diplexer. There is another 5m from the tv aerial to the outdoor diplexer.


Thank you.





mobo Intel DH55PJ, RAM: 4GB RAM, Nova-T 500 HD + Avermedia Trinity tuner card, Geforce 520 video, 120GB SSD Sandisk + 640 WD + 1000SG, Win7 Home Prem 64-bit, Media Portal 1.15.0; BTC 9019URF Cordless Keyboard, Panasonic 55" (HDMI cable), HTPC Case Silverstone Grandia GD05B.


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  # 207223 16-Apr-2009 09:15
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Hi, the diplexer should pass the 22kHz just fine. You will note that it will pass DC to the LNB, the 22kHz is pretty much seen as DC as well. I have used diplexers with 22kHz switching quite a bit, never had an issue.

Cyril

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