DSL Q? 8000-9000ft from CO vs. 13490ft from CO. big hit in speed?

[dakata24]

i just moved and am planning on setting up pacbell dsl. at my previous home, i was about 8000-9000ft from the Central Office. I was getting around 1.2Mbps-1.3Mbps. At my new place, ill be 4000-5000ft further from the CO. anyone have any rough figures on speed vs distance from CO?

not sure if this makes any difference, but the place im moving to is in fremont, ca (silicon valley country) and is in a newer home built in 1998. will newer/better inside telephone wiring compensate alittle for my distance deficency?

 

[ktwebb]

You start losing bandwidth at about 12k feet. At least that is what I have read. I am 16K and I only get about 380 of my 1.5 conection. You should see some degredation is my guess, but I would wager that you will still be a meg or more.

 

[davisdog]

I would guess you might get 1/2 your previous speed or perhaps a little more (still alot better than 56k)...The new home will mean nothing although if the wiring in the neighborhood is newer it might help especially if it was planned out right...You might try out @home first since its available in fremont and should be faster (and their is no time commiment and free install,so if you dont like it just dump it)..although they have had some growing pains in fremont since that was the first area they brought @home online in the Bay Area...I live around the Bay in Saratoga and on a new @home segment that flies since they'd brought the lessons learned from fremont (between 2-4Mb d/l)

 

[dakata24]

im hoping i dont get that much (1/2 i mean) loss in speed. i was using the data on dslreports.com the figure out the distance to my CO. i would go with @home but it's not available to me yet. ive talked to a @home installer that was servicing another person in the neighborhood, and he said that all the hardware and everything is set for me to get it, all i need to do is get someone to install it. but when i called @home & checked also on their website, it still tells me it's not available yet. i must say, that is very frustrating. i think they need faster computers to update their information so i can get my cable internet!

im hoping the people that built this housing development did a good job. citation homes is the people that built the houses. when my parents were looking around for a new house, they found a few developments built by them. so im hoping they knew what they were doing.

 

[JonB]

Question, since I've got SWBell working to setup my DSL.

Is the slowdown you get at longer distances only due to packet retransmissions? Or does the DSL modem use some type of adaptive frequency shifting to keep a stable (low packet loss) connection?

thanks.

 

[davisdog]

jonb...what kills ADSL is line attentuation...so as the signal travels farther the amplitude falls off until it becomes noise...the two factors that affect it are frequency and distance I believe...Since you distance is fixed, I imagine the two modems negotiate down to a slower frequency until they can lock up and that's what you end up with...about 18000 feet is where it becomes too low at any frequency based on the technology it uses.

dakata24...don't believe @home's website...I think it still shows me as not able to get it (although I've had it for a year now)...Calll them and if they tell (or told you) you can't get it, see if you can get them to double check by telling them the install guy was just down the street the other day...You've got some time, because even if you ordered DSL from PacHell it will be at least 6 weeks before they get somebody out to give it a first shot at hooking you up