Clear Atlanta Wimax Speedtest

30 July 2009, ~11:00am.
Not bad for during the middle of a business day. Provisioned for 6Mbps service.
With signal levels as follows:
WiMAX RSSI: -43 dBm (higher values are better)
WiMAX CINR: 34 dB (higher values are better)
To find out your levels using the CPeI150, browse to 192.168.15.1, use the password 'motorola' and click on "Status" at the top.

Category:

Science & Technology

Tags:

• Clear
• wimax
• atlanta
• cpei150

[tekramt]

The reason for this high throughput is the antenna location. The author stated that he is near Hotel Atlanta off Georgia Tech:

800 Spring St. NW Atlanta, GA 30308

Antennasearch showed that the tower is:Nextel License Holdings 1, Inc.103 feet.13 miles

Wimax works well at distances of about 3000 feet. Beyond that you really have to position your antenna outside or near a windows.

[apl175]

@tekramt Hi - thanks for commenting on my video. What I actually said is that I was in "midtown atlanta not too far from Georgia Tech" According to google maps, I am 12,000 feet away from that antenna on Spring Street. There must be another antenna nearby.

[AloneUnknown]

and can you tell me what was the ping rate ? i couldn't see it !

[apl175]

Ping varies between I'd say 95ms to 120ms. Much higher than DSL or Cable, but VOIP seems to work OK...not sure about online games though since they seem to very sensitive to that. Still getting similar speeds with no slowdowns to this day.

[AloneUnknown]

that's fast !! ôõ hmm

but when you say the RSSI value should be high, you mean -43 is better than -65 for example ?!

[apl175]

Yes -43 > -65. You want to get those numbers as high in value as possible.

[peasutoob]

CINR (Carrier to Interference-plus-Noise Ratio) is a much better measure of performance. That's because RSSI measures raw signal strength including noise. You can have a high RSSI value with lots of noise and the signal quality would be poor.

I get a CINR of up to 16 when the modem hits 4 bars (the LEDs on top of the modem). 3 bars CINR is ~9-12.  Bandwidth is about the same with 3 or 4 bars, but latency is noticeably improved @ 4 bars.

RSSI ~ -71 to -65.

Ping is ~67 - 89 ms.