Rev A - how to know if its active?

[taxilian]

I'm using the new DCD 2.0 rom with great results -- and since I've been just a lurker for awhile, a big THANK YOU to everyone working on that.

I have a quick question: How do I know if it's connected using Rev A? I'm not seeing any performance differences, though there should be Rev A coverage here... just curious

[EvilDeadFan]

There are a few mobile bandwidth tests that you can run.
http://www.dslreports.com/mspeed?jisok=1

[taxilian]

my average looks about 611 kbit/sec... that is the same as before the Rev A upgrade. this means Rev A isn't working? and to judge by reports from others, I guess nobody really has it working?

sorry to put those as a question, butas far as I can tell, there is no evidence of a speed diff w/ the new radio.

gps works great, of course... and on WM6.1, everything is faster. just not data...

[rajuabju]

Are you sure you have Rev A in your area?

I'm getting around 900k now... before I was in the 200k range, if I was lucky!

[xweaponx]

Check out this site for an idea of Rev. A coverage in your area.
Hint: The more that submit the more accurate it becomes...

http://evdomaps.com/

[bedoig]

Rev A is definetly working on the 3.16 ROMs. I used to average around 400-600 down and never more than about 120 up. Now I'm averaging around 1 meg down and 300 up. The best I've gotten was 2.2 down, 540 up. Definetly Rev A...

[vaxick]

My upload speed is faster, but my download speeds are still the same. Then again, I've always wondered how good the EVDO network in my area actually is.

[Juicy47]

I like this entry on EVDO Maps:

200 Consillium Place Toronto, ON M1H 3J3

Carrier: Verizon Create Date: 6/29/2007
Computer: CANADAPK Update Date: 6/29/2007
Network: RevA Location: outdoors
Download: 1972 Upload: 640
dBm: Bars:


This is TELUS Mobility HQ.... almost 2megs/sec download!

[taxilian]

interesting.

I'm in Utah Valley, in ... err... well, Utah. Sprint's maps all show full coverage, but I thought I saw a map once that had specifically Rev A. now I can't find it.

maybe they don't have it here yet... that would be strange, given the unusually high concentration of technology companies that are found around here, even despite Novell's slow decline. But, I've been getting 400-1000kbps since I got my phone, not just since the update... no noticable change.

maybe someday they'll get it going and suddenly everything will speed up =]

too bad there is no indication other than speed of which rev the evdo is running. it would be interesting

[knives of ice]

do you really mainly notice Rev A speeds when you use your phone as a modem? i thought i'd really be able to see a difference with Rev A using slingplayer, but i get the same speeds as i did on my old rom. i live around pittsburgh as well which is supossed to be a rev A area.

[SteveNYC]

As a general statement, the improvements from Rev. 0 to Rev. A are not that impressive on the download side. Yes, the improvements on the upload side should be more impressive, but how many people are doing any significant uploading? :)

On the other hand, the latency should improve considerably and I think most people overlook that. It's a pretty big deal.

We just got finished upgrading the embedded WWAN on a bunch of laptops at work from Rev. 0 to Rev. A and I can tell you the entire improvement was in the latency. The responsiveness was much improved.

I would be checking that first. Do some before and after tests and report them back.

[defaultdotxbe]

yeah, ive definately seen an improvement in latency, i used to get 1s+ pinging google, now i average about 125ms

[wiinex]

i flashed to the leaked htc 3.16 first and my download is really slow, more like 288 to 488. but when i flashed to dcd's 2.0 i got 997/sec. thats amazing. big difference. i used the same mobile speed site.

edit:
just did another test 1020/sec thats cool. I myt not get the same speed all the time but it feels good knowing i wont go anywhere near the slow speed of pass roms.

[killerkhatiby009]

I get around 2.23MBPS download using opera mini and the running the Leaked 3.16 ROM. Much faster than my previous 400-1.2MBPS download on the 2.16 ROM. Funny thing is that, when i switch from opera mini to Opera Mobile, or IE, i get really slow speeds, maybe top at 1MBPS but usually like 500KBPS. Its like only opera mini can use the Rev.A while the other two stick with the Rev.0

[prophetizer]

well, i'm getting about 110 down, and i live in chicago where we have rev A, i've never been able to get more than 1x

[prophetizer]

anyone have any ideas on why that i live in a rev a area, i only get 1x, always only get 1 x

[Juicy47]

600-900kbs avg for me on TELUS

[baaadandy]

I get around 2.23MBPS download using opera mini and the running the Leaked 3.16 ROM. Much faster than my previous 400-1.2MBPS download on the 2.16 ROM. Funny thing is that, when i switch from opera mini to Opera Mobile, or IE, i get really slow speeds, maybe top at 1MBPS but usually like 500KBPS. Its like only opera mini can use the Rev.A while the other two stick with the Rev.0

Remember that Opera Mini goes through a server and strips some data from the images so they load faster on your device, which in turn shows inflated download speeds. Opera Mobile and IE are loading the raw data so it takes longer, thus yielding the "real" speed results.

[dadishman]

I thought that Rev A was supposed to support simultaneous Data and Voice connections? I was not able to load a website while on a call. Is this something that needs to be activated by the carrier? Should I be able to do both on the new ROM? I see that there is still a CDMA1X connect that happens when I load a webpage, or at first data usage...any ideas?

[blazingwolf]

I thought that Rev A was supposed to support simultaneous Data and Voice connections? I was not able to load a website while on a call. Is this something that needs to be activated by the carrier? Should I be able to do both on the new ROM? I see that there is still a CDMA1X connect that happens when I load a webpage, or at first data usage...any ideas?

That would be EVDV not REV A.

Here is a good explanation of it. http://en.wikipedia.org/wiki/CDMA2000

[rbadh91]

I dont know if this is what we should be looking for signal strength, but in FieldTrial.exe; under HDR i have
Rx Signal Strength 93
Rx Power -90dbm
Requested Data Rate - 216Kbps

and i get 612kbps on the 400kb test

can anyone match these fields and see what they get ont he 400kb test?

[madman34]

Greetings all,
I have worked on all phases of Nortel CDMA and data products for Nortel in the NI department on Sprint, Verizon, Alltel, and many small providers, and would like to shine a bit of light on things. 1xRTT uses the voice resources of the CDMA network, where 1xEVDO is an overlay meaning that it uses dedicated hardware plugged into the BTS to give EVDO service as well as dedicated T1 connections plugged into the front of the card known as a DOM. A DOM can handle up to 4 T1s although most providers launched with only 1 and many sites stull have the 1 and are just now starting to add more in heavy traffic areas. The theoretical limit for 1xEVDO is 2.4 mbp/s download and since it uses the CDMA protocol, I will not bore with modulation tech, so the upload is limited to 153.6 kbp/s. Since a T1 has a bandwidth of 1.54 mbp/s and there is some overhead then expect 1.2 download if the signal is prime, and remember that the drop in speed is drastic as signal drops and more customers log on. 2 T1s will make 2.2 about the max and no more T1s will help, just make redundant fault tolerant. Now to REV-A: replace the DOM with a DOM-A and the minimum software rev in the DO-EMS, RNC, and DOM-A must be 4.0.106 or higher, we just upgraded VZW Lewis Center to 5. What you get is backward compatability with REV-0 and 3.5 mbp/s down and due to the reverse link being the same as down you see 1.8 mbp/s as the upload limit. You will see lowered latency because of the improvements, better upload speeds, but probably not much change in download until they add more T1s...........Hope this helps.

[SteveNYC]

You will see lowered latency because of the improvements, better upload speeds, but probably not much change in download until they add more T1s...........Hope this helps.Thanks for the explanation. It's very useful.

What would you say are the average latency figures for both EvDO Rev. 0 and EvDO Rev. A?

[scootle74]

Greetings all,
I have worked on all phases of Nortel CDMA and data products for Nortel in the NI department on Sprint, Verizon, Alltel, and many small providers, and would like to shine a bit of light on things. ...........Hope this helps.

wow, thanks for that. great info!