Re: super cordless phone

On Jan 9, 4:33 pm, "Phil Allison" <philalli...@xxxxxxxxxx> wrote:
<mrdarr...@xxxxxxxxx>

How come cordless phones with a range of 1 to 5 miles are not common?

** Cos they are not legal under FCC or other countries radio frequency
management schemes.

EnGenius makes a product line, but eBay indicates they are several
hundred dollars per phone - not likely to kill the cell phone market
anytime soon.

** But are likely to "kill" any electronic device in range.

....... Phil


This is interesting:
http://www.engeniustech.com/telecom/products/resources.aspx?faq=7&ID=103

" Why would EnGenius use 900Mhz, when this is an older technology
compared to the newer 2.4 and 5.8Ghz cordless frequencies?

Contrary to common belief, range is actually better at lower
frequencies. Lower frequencies are less absorbed by objects and less
affected by walls, buildings, trees, and even open air. Additionally,
we use 900MHZ to avoid the sharing of WiFi networks, which would not
only cause interference, but also reduce range for our system as
well. Thirdly, the FCC allows more power to be used at lower
frequencies because lower frequencies are safer for human exposure."

Is the maximum allowable transmission power the FCC allows at 900 MHz
still 1 watt?

Michael
.

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