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In article <1174671962.266123.256740@n76g2000hsh.googlegroups.com>,
Andy <johnnyquest0241@gmail.com> wrote:
>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?
I know a ham who used to routinely work moon-bounce on VHF, with a rig
powered by a single 9v transistor radio battery. I think he had something
like 60 _milliwatts_ on transmit.
Good antenna's (and proper installations) make a bigger difference than RF
power. :) Years ago, I had a base-station installation that outperformed
virtually every other installation in the territory -- who were almost all
running 2-4.5x the power I was.
Now, "all else being equal", and for the same recieved RF signal level,
range will chage proportionally to the square-root of the change in
power level.
Caveat: 'all else' is *rarely* equal. <wry grin>
That said, the 10-watt rig would be expected to have an approximately 40%
greater working range than the 5-watter. *Assuming*, of course, that the
transmitter on the _far_end_ has sufficient power to reach _you_ at that
distance.
> it seems the price difference is 2X to 3X. is the price
>difference justified?
Depends on 'how badly' you need the extra range, doesn't it? *grin*
Only -you- can evaluate your needs/requirements.
>i guess i'm asking "should i ebay the 10W unit and find a better use
>for the remainder?"
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Re: theoretical radio range....
