Analog Baby Monitor Analog baby monitor use analog radio signal that operates under 49Hz frequency band. They easily pickup noise and are more prone to interference by devices such as cordless phones. It allows you to select out of several channels in case there is interference in any channel. Analog baby monitor signal does not travel much distance as compared to digital ones. Analog baby monitor signal is continuous. The signal transfer speed is significantly lower compared to a digital baby monitor. Digital baby Monitor Uses digital radio signal that uses frequency under 1.9GHz, 2.4GHz, 5.0GHz Prone to less interference but still receives sometimes from devices that use 2.4GHz or 5.0GHz frequency band such as Wi-Fi routers. Better quality data transferred – audio or video. Uniform signal reception. It has a better coverage and the data does not lose it’s quality. More signal capacity transmitted per second.