LPFM

[D. A.]

> > There are software packages used by consulting
> engineers that can do
> > that -- although with a good knowledge of the rules,
> CDBS, and a map
> > you can often come pretty close.
> 
> Here's what I'll assume is a reasonably decent free site:
> 
> http://cdbs.recnet.com/lpfm.php
> 
> It's based at RECnet, which has a regular ol' broadcast
> query, too. It'd certainly get the OP close enough to know
> what's possible or "might" be allowed.

But, again, it's backwards. 

It starts with the coordinates.  

Looking for a list of locales to start.