US robotics bought out a company a few years back that made one that I know
would transmit a bit over 100 feet in open air.  It wasn�t fm but 900mhz
band.  It was designed for pc audio out and transmitted to FM channel but
the trick on it was that the FM range was only about 30 feet.

However there are solutions available in the entertainment stage industry.
Pricey though.

Then there is always stuff like
http://technocrat.net/article.pl?sid=05/01/05/209247&mode=nested
or
http://technocrat.net/article.pl?sid=05/01/05/209247&mode=nested

Out in an open field you shouldn�t run into interference problems
jimt

On 6/3/05 8:51 PM, "Greg Potts" <Greg@POTTSFAMILY.CA> wrote:

> Hi Volks,
> 
> I was riding in my Dad's vanagon today and it has TERRIBLE radio
> reception. The poor audio quality got me thinking about those
> wireless connectors to feed the signal from a CD walkman or an ipod
> into the FM radio. That then led me to wonder.... what's the range on
> one of those things? Would it be possible to increase the range out
> to 200 yards or so? With that much range I could create a wireless PA
> system for the campground at Buses Of The Corn; and use it as our own
> camp-out radio station. That way we could all listen to the same
> tunes at once...
> 
> If anyone knows a cheap and easy way to do this please let me know by
> p-mail.
> 
> 
> Happy trails,
> 
> Greg Potts
> Toronto, Ontario, Canada
> 
> 1973/74/79 Westfakia Conversion **Bob the Tomato**  LY3H
> 1977 Sunroof Automatic L63H/L90D
> 1988 Vanagon GL 8-passenger Automatic
> http://www.pottsfamily.ca/westfakia
> http://www.busesofthecorn.com
> 
>