Broadband Related > ADSL Issues

Very low noise on tones 415-468

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konrado5:
Is it real that noise is so low? I know that other people don't use these frequiences (no crosstalk) but it seems the noise is still incredibly low.

Best regards
konrado5

burakkucat:
It is generally accepted that a good noise floor, for an xDSL circuit, would be around -140 dBm/Hz per sub-carrier or quieter.

If only that level was maintained across the entire bandwidth . . .

konrado5:
What do you think about this huge difference between tones 415-468 and remaining tones?

JGO:
"What do you think about this huge difference between tones 415-468 and remaining tones ? "

Frequency Allocations - they are not made with IT in mind !.

konrado5:

--- Quote from: JGO on October 19, 2017, 07:06:03 PM ---"What do you think about this huge difference between tones 415-468 and remaining tones ? "

Frequency Allocations - they are not made with IT in mind !.

--- End quote ---
I don't understand. I know that I am only user using frequiences 1.8-2.0 Mhz. My ISP disabled ham band mask for me.

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