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Old 11-17-2004, 05:45 PM   #1 (permalink)
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Old 01-13-2005, 09:12 AM   #2 (permalink)
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Default Signal Strength Indicator...

Hi all,

Does anyone know how Rim calculates the signal strength bars on the main screen?

I am using the RadioInfo.getSignalLevel call which works, and I know the scale is from -40 to -120, but what's returned on the device is totally different and how it relates to the signal indicator on the main screen is beyond me.

Also, using the simulator returns completely different signal levels as related to the indicator as well.

Any ideas???

Thanks,

Mark
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Old 01-14-2005, 12:34 AM   #3 (permalink)
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It roughly corresponds to:

-79dBm and higher: 5 bars
-80dBm to -84dBm: 4 bars
-85dBm to -89dBm: 3 bars
-90dBm to -99dBm: 2 bars
-100dBm and lower: 1 bar
A number below -120dBm: No reception (usually a value of 255)

These are not the exact numbers, but it definitely goes something close to that.
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Old 01-14-2005, 08:42 AM   #4 (permalink)
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This is from the bb knowledgebase:

What Is - Relationship between signal bars and RSSI
Last Modified: 30 January 2004
Article Number: KB-03024
Summary

This article applies to the following:

* Component: Handheld
* Handheld: BlackBerry 5800 Series
* Software Version: All
* Email Integration: All


Details

Signal strength on a BlackBerry Wireless Handheld™ may be viewed in one of two ways. The first is by viewing the number of bars displayed by the network status indicator on the handheld Home screen. The second is to view the RSSI strength indictators[M1].

The following table compares the signal strength indicated by bars to the RSSI strength indicators:


Signal Bar Strength Indicators RSSI Indicators

5 bars -77 or higher
4 bars -78 to 86
3 bars -87 to -92
2 bars -93 to -101
1 bar -102 or lower

Additional Information

This issue applies to all Java™-enabled BlackBerry® handhelds.

Keywords

signal, bars, relationship, RSSI, strength
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Old 04-05-2007, 05:03 AM   #5 (permalink)
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does antone have the source code for the detection of the mobile network RSSI?
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