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| This is the original and most commonly used frequency, but it is cluttered and noisy. On the other hand it's range is excellent and capable of penetrating walls and other obstacles better than other frequencies. It is also the frequency that baby monitors use. It is insecure and can be easily eavesdropped using a radio scanner. | |
| Better clarity and security than 900 MHz. Excellent range and penetration, but subject to interference from microwave ovens, bluetooth wireless devices, baby monitors and WiFi networks. Dissatisfied cordless phone users more often than not have 2.4 GHz devices. Buyer beware! | |
| The latest and greatest. Superior range, clarity and security. Not affected by 802.11 a/b/g WiFi networks, however there maybe conflicts with the 802.11n networks when they are more widely adopted. WiFi 802.11n also uses the 5 GHz range . Most high end multi line cordless phone systems use the 5.8 GHz frequency. | |
| DECT 6.0 is the FCC compliant version of DECT available in the U.S. Excellent range and clarity. Free from external interference. Outside of the U.S. DECT operates at 1.8 GHz. At either frequency DECT delivers better range than either 2.4 GHz or 5.8 GHz. |
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5.8 GHz Phone 
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5.8 GHz Phone 
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Uniden 900 MHz Extended Range Cordless Phone 
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Uniden 2.4Ghz Cordless Phone 
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The bottom line is that the best cordless phones now use either 5.8 GHz or DECT 6.0.
A serious cordless phone comparison needs to start by noting the respective frequencies of the phones. Cordless phone frequencies are the single most significant factor affecting user satisfaction i.e. range, clarity, interference and security.
The best single line cordless phones in the widest range of circumstances are DECT 6.0 phones. (DECT1.8 GHz outside of the U.S.)
The best cordless multi line phone systems are 5.8 GHz phones:
Modern cordless phones can be relied upon to provide clarity and security comparable with corded phone. The 5.8 GHz and 1.9 GHz frequencies should provide the greatest clarity and the least susceptibility to interference. Lower frequencies support better propagation and will generally deliver better range.
Related Articles:
Business Phone and Internet Service - the pros and cons Expandable Phones - the best cordless solutions Buying a Used Phone System - the Pros and Cons |
From Cordless Phone Frequencies to Best Cordless Phones
From Best Cordless Phone Frequencies to Best Business Phone Tools
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