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Old 08-12-2006, 09:12 AM
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Quote:
Originally Posted by gyyang

I don't know about my dish. I brought it from eBay as a new item, but there is no model number on the dish, no tech specifications or manual. Only from the seller's AD in eBay, it says:
Model DS2076
Frequensy Range 10.95 - 12.75 GHz

On the package of LNB, it reads LO: 10.75 GHz
Well that's interesting. The 10.75 LO freq is really what is important to you, as that would mean you set your receiver as a "standard" with that 10.75 GHz LO freq. The "interesting" part is the Frequency range. Not that it is unusual, as I think that is pretty typical, it's just that for a Standard LNBF, I thought that they usually advertised them as 11.7-12.2 GHz. We all know that they actually have a wider freq range, because we receive up thru 12.7, however the interesting part isn't the upper range, but the lower range. It generally is not possible for us to utilize the low end of this frequency range, because most receivers don't tune below 950 MHz, and to reach the 10.95 freq, the receiver would have to tune down to 200MHz! But besides being able to tune this low, the LNBF itself would have to basically have no output bandpass filters at all to have output that low.
I had always assumed that standard LNBFs gradually fell off in response on the upper end, but rapidly fell off on the lower end, but these specs would suggest that this wasn't the case. Anyway, I find these specs interesting.
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