Types of Frequencies

Frequency is the bandwidth at which the phone operates. Cordless phone frequency bands are:

• 46-49 MHz - This band contains inexpensive analog models and share the same band of 25 channels (frequencies) with low-power walk-talkies and baby monitors. These units are not very secure as any radio scanner can eavesdrop on these models. A neighbor with a similar phone can listen in on your same frequency as well. This band can be quite crowded, depending on the number of users in your neighborhood and is not recommended for use. Range of 40 to 250 feet under ideal circumstances.
• 900 MHz – This generation of cordless telephones enjoys 80 channels and use the "900 MHz" band. Only the models with digital spread spectrum (DSS) cannot be readily heard by a radio scanner. The rest are all analog models that are easy to pick up. This band is much less crowded than the 46-49 MHz band. Most manufacturer uses some but not all of the available channels. Range of 100 to 500 feet under ideal circumstances.
• 2.4 GHz - These models operate in the uncrowded 2.4 GHz band. Few radio scanners cover this band. Both analog and digital spread spectrum (DSS) models are available, but DSS is recommended to ensure privacy. Clarity, security and the availability of advanced features like multi-handsets are the real advantages for this frequency. Range of 100 to 300 feet under ideal circumstances.
• 5.8 GHz - The latest in cordless phone technology transmits on a new, open frequency band that has very little chance of interference in both urban and rural environments. This is the highest available frequency you can purchase and results in maximum audio clarity. Ranges of 75 to 150 feet under ideal circumstances.  Concrete walls and steel structures will reduce your range significantly.

If you are buying a new cordless phone, purchase one with at least a 2.4 GHz band using digital spread spectrum technology for privacy and longer range. To determine which type of phone is best for you, visit our shopping consultant.