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"Andy" <johnnyquest0241@gmail.com> wrote in message
news:1174671962.266123.256740@n76g2000hsh.googlegroups.com...
>i have a radio rated at 10W and a radio rated for 5W output. mine 5
> watter is not a handheld but this is typical output for that genre.
>
> assuming they are using the same antenna what is the theoretical range
> difference between the two and what is the practical range
> difference? it seems the price difference is 2X to 3X. is the price
> difference justified?
>
> i guess i'm asking "should i ebay the 10W unit and find a better use
> for the remainder?"
My recollections from physics 20+ years ago is that radio wave strength is
determined by the cube root of the transmitter strength. So, a 10w radio
has twice the power of a 5w radio. The cube root of 2 (twice the power) is
1.26, meaning that the higher powered radio should have 26% more range than
the low powered radio.
One thing to consider is that a 10w radio will have an easier time
overpowering a distant signal, so your transmissions get "stepped on" less.
KB
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Re: theoretical radio range....
