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andyross
Premium,MVM
join:2003-05-04
Schaumburg, IL
reply to andyross

Re: [Connectivity] I hate cold weather

It's -15F out, and my downstream is poor, compared to normal. It's actually up a tiny bit from about 30 minutes ago. My SNR is typically around 37-38, and Power is typically about 1dB higher.

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 8 693000000 Hz 1.2 dBmV 33.8 dBmV 354 408
2 Locked QAM256 1 651000000 Hz -0.3 dBmV 33.4 dBmV 571 326
3 Locked QAM256 2 657000000 Hz 0.0 dBmV 33.7 dBmV 763 387
4 Locked QAM256 3 663000000 Hz 0.4 dBmV 34.3 dBmV 2102 731
5 Locked QAM256 4 669000000 Hz 0.5 dBmV 34.1 dBmV 1005 398
6 Locked QAM256 5 675000000 Hz 0.0 dBmV 34.0 dBmV 2117 642
7 Locked QAM256 6 681000000 Hz 0.1 dBmV 34.0 dBmV 4554 2229
8 Locked QAM256 7 687000000 Hz 0.4 dBmV 34.1 dBmV 404 354


SHoTTa35

@kfvaluation.com
Umm 0.0dBmV is PERFECT signal so 1.0 is worse than 0.5.

Your SNR is bad yes as you want that higher. So 35 is getting better but no idea why signals would be better but SNR gets worse. Must be some moisture or breakage on the line and the higher input power overpowers the noise caused by the leak?


Darknessfall
Premium
join:2012-08-17
kudos:6
Reviews:
·Frontier Communi..
·Comcast
·AT&T U-Verse
When we had the cold over the weekend here(CT) my downstream went up to about 7 and upstream went down to about 38. SNR stayed the same(actually was just slightly better).

Right now as we have our brief warm up I have these signals.

Power Level: Signal to Noise Ratio:
Channel 1: -0.6 dBmV 40.5 dB
Channel 2: -0.4 dBmV 40.4 dB
Channel 3: 0.0 dBmV 40.3 dB
Channel 4: -0.4 dBmV 40.3 dB
Channel 5: -0.4 dBmV 40.3 dB
Channel 6: 0.5 dBmV 40.4 dB
Channel 7: -0.9 dBmV 39.9 dB
Channel 8: -0.6 dBmV 39.9 dB

Power Level:
Channel 1: 39.5 dBmV
Channel 2: 41.5 dBmV
Channel 3: 42.0 dBmV
Channel 4: 0.0 dBmV

andyross
Premium,MVM
join:2003-05-04
Schaumburg, IL
reply to SHoTTa35
said by SHoTTa35 :

Umm 0.0dBmV is PERFECT signal so 1.0 is worse than 0.5.

Your SNR is bad yes as you want that higher. So 35 is getting better but no idea why signals would be better but SNR gets worse. Must be some moisture or breakage on the line and the higher input power overpowers the noise caused by the leak?

I wonder if some amp is somewhat weak as it gets cold and keeps trying to push it's gain up, causing the extra noise despite the slightly weaker signal.