What difference does Ghz make when buying a cordless phone?

Question

I need to buy a new cordless phone. I'm confused with the different amounts of Ghz they offer. I'm trying to be cost effective so I don't want to spend more for a 7.8 Ghz if the 5.8 Ghz is about the same.

Answer 1

That simply is telling what frequency range the phone is using to transmit its signal.

Any frequency higher than 3.0 GHz is fine, as at that range it liekly won't be interfered by anything els ein the house. Just do a quick look around all the wireless gadgets in your house and figure out what frequency they use. If you purchase a phone that uses the same frequency, the two objects could potentially interfere with each other.

Avoid cordless phones in the 2 GHz range, as this is the range the average household microwave emits, and when your microwave is active, it will interfere with yout phone. True story!

Answer 2

The 7.8 Ghz has more range then the 5.8 so if you dont plan on going out of the house it will be fine.

Answer 3

One of the best phones on the market right now is the DECT 6.0!!! Panasonic...with build-in router/firewall!!

As with the Cordless phones use... . the LOWER the frequency of the wave, the FURTHER the signal will travel if all other variables are equal (same transmitting power etc) the HIGHER the frequency of the wave the SHORTER the distance the signal will travel, as it will use up all of its energy faster..

900MHz phones transmit with a much lower TX power then newer phones and therefore even tho it is a lower frequency, it still has poor range...

2.4 Ghz phones have better range then 900 Mhz phones BECAUSE they have a higher TX power. If there is no interferences from WiFi or other signals then 2.4 Ghz phones SHOULD have better range then 5.8Ghz phones

5.8 Ghz phones came out after 2.4Ghz phones, and as we have always been taught bigger is better, we are lead to assume it transmits further then 2.4 ghz. this assumption however is WRONG... 5.8 Ghz phones have LESS RANGE then 2.4ghz phones. They were introduced into the market because the popularity of WiFi which operates at the same frequency range as 2.4Ghz phones, and create interference.

DECT 6.0 operate at 1.9 Ghz, and therefore provide the furthest range out of all previous cordless phones

Answer 4

Buy which-ever one you like best. The 7.8 Ghz will cost more because they're newer. But a 5.8 will work just as well.

Answer 5

Remember,........ a bigger Mhz is not neccesarly better.....we think here in the US that everything begger (in numbers) is better!

wellm not so with MHz....accturally the 2.4MHz has a further range then a 5.8 MHz...!

but secutity is teh best with DECT.6.0 with buildin firewall/router...!

900Mhz is the worst!!! everyone should get rid of these phones!!

DECT is digital enhanced cordless telecommunications

FHSS is frequency hopping spread spectrum.

DECT phones are 1.9Ghz phones

FHSS is a type of encryption, and channel changing function/feature available in diffrent frequency range phones...

FHSS has replaced DSS (digital spread spectrum) as the latest security feature for cordless phones...

WiFi operates within the 2.4Ghz range, so a 2.4Ghz phone is a poor choice, but if this is the type of phone that you currently have, you may eliminate or reduce the chances of interfearance by changing the channel on the ROUTER, as the phone changes channels on its own, and there is no manual setting to change the phones channel...

a 5.8 Ghz phone will provide you better chances at eliminating the interfearance... however at the possible cost of range, as the lower the frequency the further the range...

The BEST choice for cordless phone for range, and lack of interfearance is a DECT phone.. the 1.9Ghz range is a licenced radio frequency for the exclusive use of cordless phones, unlike any other cordless phone frequency (900Mhz, 2.4Ghz, 5.8Ghz.) and as it is lower in frequency (aside from 900 Mhz) it operates with the furthest distance then any cordless phone. (all cordless phones operate at further ranges then 900 Mhz phones, because they have a higher transmitting power, and also 900Mhz is a very active radio frequency..)

Answer 6

900 Mhz is old and too low and is possible to be intercepted by radio scanners.

Sprint uses 1.9 GHz.

Wireless computer systems use 2.4 GHz so there is interference. 5.8 and 6.0 is too close to really be different no matter what acronym they use.

The higher the frequency, the smaller the wavelength so it takes more to interfere with it so it goes farther and thru more objects. Higher freqs go the distance.