buddy222

Since trading out my SB4101 this past Aug with my new SB5120 . . My speed has been consistantly improved averaging 7-10mbs down / 710-734 up using Speakeasy Wash. DC & New York servers. Giganews server shows up to 15mbs down with their 3.1mb download file. My power levels are shown below: Downstream Value Frequency 723000000 Hz Signal to Noise Ratio 35 dB QAM 256 Network Access Control Object ON Power Level 6 dBmV The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading Upstream Value Channel ID 6 Frequency 20000000 Hz Ranging Service ID 2064 Symbol Rate 2.560 Msym/s Power Level 54 dBmV (normally this runs at 50 dBmV) Again by changing cable modems did improve my throughput with Comcast.

I stated in a previous post that comcast upgraded me to 6mbs down 768 up. I could never get above 4.9mbs using the SB4100 or the SB4101. Comcast tech came over & tested my computer & SB4101 modem which produced the same similar outcome by only seeing 3.9mbs down. He then setup the SB5120 modem that I bought at BestBuy & the test results were astounding producing 20mbs. . 15mbs. . bursts. He then registered the new SB5120 MAC address with comcast & took back the leased SB4101. My speed down now consistently varies from 6.5mbs to 15mbs with 703 to 734 up. Bottom line is in my case the modem upgrade made all the difference

Comcast told me i'am now at the 6mbs level in the Philadelphia suburbs. So far I haven't got beyond 4.9mbs down. The Comcast tech came out switched the SB4100 with a SB4101. I had ask him to give me a SB5100 but he said they were out of those. I still haven't pasted the 4.9mbs level but the upload improved from 374 to 703. The tech said it could be a weak signal problem. My modem downstream SNR is 37dB...PL -1dBmv. The upstream PL is 50dBmv. Comcast is sending out another tech to verify the signal strength in a few days. Comcast has already dropped a new cable & installed a new amp in the pedestal then switched to a new splitter. I think I'll buy a SB5100 from BestBuy...when the tech comes i'll let him try that modem to see if this is really a modem issue. I've tweaked RWIN ..MTU with different variations but nothing gets me into the middle 5 to 6mbs range. They said the cap is at 6.6mbs. Any input would be welcomed

Comcast told me i'am now at the 6mbs level in the Philadelphia suburbs. So far I haven't got beyond 4.9mbs down. The comcast tech came out switched the SB4100 with a SB4101. I had ask him to give me a SB5100 but he said they were out of those. I still haven't pasted the 4.9mbs level but the upload improved from 374 to 703. The tech said it could be a weak signal problem. My modem downstream SNR is 37dB...PL -1dBmv. The upstream PL is 50dBmv. Comcast is sending out another tech to verify the signal strength in a few days. Comcast has already dropped a new cable & installed a new amp in the pedestal then switched to a new splitter. I think I'll buy a SB5100 from BestBuy...when the tech comes i'll let him try that modem to see if this is really a modem issue. I've tweaked RWIN ..MTU with different variations but nothing gets me into the middle 5 to 6mbs range. They said the cap is at 6.6mbs. Any input would be welcomed