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uniqs
1040

bitplayer
@comcast.net

bitplayer

Anon

upload speeds doubled to 10Mb/s.

www.speedtest.net showing 20/10! up from 20/4-5. what gives?
bshelly
Premium Member
join:2002-02-17
Conover, NC

bshelly

Premium Member

Your upstream modulation has probably changed to 32QAM and your symbol rate is now 5.120Msym/sec. which will give you about double the upload bandwidth. About two weeks ago, my upstream RF Channel changed from 4 to 3 and it switched from 16QAM to 32 and also doubled my upload speed to 10Mbps, but keep in mind, this is just a temporary "Powerboost" and will go back down to 2Mbps uploac.

bitplayer
@comcast.net

bitplayer

Anon

so can they really offer 10mb/s or faster upload speeds? what is the maximum upload speed that they can go up to?

dadkins
Can you do Blu?
MVM
join:2003-09-26
Hercules, CA

dadkins to bitplayer

MVM

to bitplayer
»[Speed] Higher upload PowerBoost? 64QAM? DOCSIS 2.0?

My highest upload PowerBoost so far was 11.4(I think).

andyross
MVM
join:2003-05-04
Aurora, IL

andyross to bitplayer

MVM

to bitplayer
As with any Powerboost, the speed will vary and should normally drop down after awhile. If the channel is busy, you won't get those speeds even with PB.

If your area starts using aggressive DCC (Dynamic Channel Change) to load balance, your upstream may change modulation. Mine keeps altering between 5.12Msym and 2.56Msym.

EG
The wings of love
Premium Member
join:2006-11-18
Union, NJ

1 recommendation

EG to bshelly

Premium Member

to bshelly
said by bshelly:

Your upstream modulation has probably changed to 32QAM and your symbol rate is now 5.120Msym/sec.
It may have even been changed to 64QAM.
bshelly
Premium Member
join:2002-02-17
Conover, NC

bshelly

Premium Member

Yep, mine used to be 64QAM and for the last 2 weeks or so has been locked in at 32QAM, always on Channel 3.

Sunny
Runs from Clowns

join:2001-08-19

1 recommendation

Sunny to dadkins

to dadkins
said by dadkins:

»[Speed] Higher upload PowerBoost? 64QAM? DOCSIS 2.0?

My highest upload PowerBoost so far was 11.4(I think).