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Old 06-23-2006, 10:36 AM
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Default Signal to noise ratio

Does anyone know what the signal to noise ratio should be in a wireless network? I have a lot of troubles with slow speed and frquent loss of signal and have discovered that my signal strength is around -65dBm (I think thats the term) and my noise strength is about the same and sometimes even higher. Is this normal?
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Old 06-23-2006, 10:46 AM
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It depends on the wireless card specifications but you usually want to allow at least 15-20dB SNR for a good connection. In other words, if you have a received signal of about -65dBm, then to get a fast and reliable connection your noise level should ideally be -85dBm or less.

Remember we are talking in negatives here, so -90dBm noise is better than -85dBm. An signal of -65dBm is better (stronger) than -70dBm.

Marlborough WiFi Project

Last edited by NZLamb; 06-23-2006 at 10:50 AM..
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