Monday, May 5, 2014

How far can a 900 MHz monitor get?




Paige


I'm talking about baby monitor. Is it the same as a cordless phone range? Is it better than 49 MHz (as it's much higher frequency)?
Thanks for the answers. So you both says it doesn't matter on the difference as long as it's used in a house.

I was confused as some retailer shows the frequency but not the distance. While another shows the distance but no frequency (e.g. 49 MHz or 900 MHz. And another shows 120 m or 400')

Could anybody suggest which one is better to choose from? (based on the frequency or the distance)



Answer
Higher frequencies are more easily blocked, so lower frequency ones will probably have a better range. Both should work inside your house.
It depends more on the power output than on the frequency.

There may be less interference and noise with the 900Mhz one

Can your neighbors listen in on your phone conversations with a baby monitor ?




Lady


If you're on your cordless phone in your home? I've heard that its possible for neighbors with baby monitors to do this to their neighbors, and I wouldn't think this would work, unless my cordless phone acts as a monitor.


Answer
It's possible if the phone and the monitors work in the same broadcast frequency.

Most do not, however. Modern cordless phones operate in the 2.4ghz wavelength, and older ones operate in the 900mhz wavelength (the newest ones operate in the 5.2ghz wavelength, but don't worry about those).

Most baby monitors work in the 300-900mhz wavelength, so a few of them *can* pick up on older cordless phones, but those that do are few and far between... especially becase every phone and monitor is coded to only pick up a very specific frequency around their specified range... so crosstalk is less likely.




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