Re: Watts vs distance

Check out the ham radio sites.
"Christopher" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Anyone have a formula to calculate distance and signal strength
> w/Watts?
>
> Say I want to transmit a signal 1 kilometer what signal strength do I
> need(terms of Watts or Dbs)? I want to figure out if a particular
> manufacture will be able to send a signal the distance I want by
> looking at the specs of the antenna or booster (most manufactures give
> only Watts output or Dbs).
>
> Anyone can give me a suggestion?
>
> Assuming the antenna is mounted high on top of a building (building to
> building).
>
> Thanks!