What does 900 MHz mean in a cordless phone?
What does 900 MHz mean in a cordless phone? Cordless telephones have evolved over time into sophisticated consumer electronics devices. With each iteration of technology, the radio frequency a cordless telephone uses has increased, to help avoid interference problems and eavesdropping via neighbors’ phones and radio scanner users. Cordless Phone Frequency Bands • 1.7 MHz – The earliest analog models used this frequency band, just above the AM broadcast band. They are no longer in production, and were very susceptible to interference from fluorescent lights and nearby automobile ignition systems. • 46 MHz – 47 MHz – This band contains a huge installed base of analog models. Low-power walk-talkies and baby monitors share this same frequency band of 25 channels (frequencies). Some models use audio inversion for scramblin
