Signal-To-Noise Ratio Troubleshooting

What is a Signal-To-Noise (SNR) Issue?

Signal-to-noise ratio (abbreviated SNR) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels.

An SNR issue can be caused when there is some type of radio interference, or metal/metallic object nearby your equipment that causes your internet connection to have low speeds, high ping, or both.

SNR issues will significantly reduce the throughput of the modem and make it very unstable. There are many ways to detect SNR, and to overcome SNR issues if you find yourself having one.

The first step is to move the modem to other locations and test the performance there. A low signal level with no SNR will outperform full signal and high SNR any day. So, the goal is to find a location with the best working signal, not the highest level of signal bars.

Can’t Find a Working Location Inside the Building?

If you are unable to find a location inside your home or business that works well, we would ask you perform this next test, even if it may sound somewhat crazy.

If you can get a 50 or 100ft extension cord, take the modem as far away from the house as possible, and then do a speedtest. If your speeds immediately jump to the correct level, we have confirmed there is a SNR issue in the house that must be found and corrected. An external antenna might be needed to overcome the issue.

Once you have run this test, contact our support desk (Please do this using the ticket system at my.altbroadband.com and not through the phone) and include your speedtest results, pictures, and any steps you have taken to attempt to resolve the issue. The more information you provide, the faster we can help find a solution.