There also are requirements that the board members of the non-profit organization mostly live within 10 miles of the transmitter site.
Does not apply to established educational organizations such as colleges, or school systems.
Engineering: is not that complicated; for the most part is based on a minimum distance separation table. Let's take an example (based on a modification I just did):
A church and school, they want to put the antenna on-top of the sanctuary, which is 55' above ground. Topozone found the coordinates for me. Since this was a minor change, I did not have to find an open channel; but let's assume this is a new application. Next step would be to use both the FCC's LPFM finder tool --
http://www.fcc.gov/encyclopedia/low...n=a99742107a-TRI_04-13-2012&utm_medium=email;
and REC networks tool:
http://cdbs.recnet.net:8080/lpfm.php
to get a list of possible channels to study. Notice REC network's tool has several options, which may indicate possible channels the FCC tool ignores. One thing to check is if there are any channels that may be precluded because of pending translator applications.
Then pull up section 73.807 which has a table of "minimum separations." (you can get to the rules by going to FCC.GOV, then to the "transition.FCC.Gov" which takes you to the old home page, the link to FCC rules is about two-thirds of the way down the list on the far left.).
Make life easier by printing out the tables.
Now go to FM preliminary study:
http://transition.fcc.gov/mb/audio/bickel/FMprelimSTUDY.html
and enter in the coordinates you found in the first step and the frequency of a possible channel. This will produce a fairly accurate (and current) list of stations you must consider. By cross-checking between the 73.807 table and this list you can quickly see if there are any stations or translators that will be too close to your site, thereby precluding that frequency at that site.
Having done all this, now you can sit back and wait for the FCC to announce an open window.
THEN you can go back and check again to make sure the frequency is still open. Since the Commission also proposes to dispose of a number of translator applications before then, a second check (using the two channel finding tools mentioned above) may reveal additional frequencies that would otherwise be blocked by translator applications.