The request here to throw off references to programs and resources allowing to count: a profile of a line signal attenuation
And to spread on how many precisely there corresponds the settlement data with practice

Here one of them

The lack doesn't consider azimuths

http://www.linktest.ru/

You do not need a program to work out path loss.

Its simple, you just have to remember 3 things only.

Mathematically

AT 2437 Mhz the free space loss at 1kM is -100dB
AT 5500 Mhz the free space loss at 1kM is -107dB

Every time you double the distance, add another -6dB to those figures.

Example.

2437 Mhz distance = 4kM then FSL = -112

5500 Mhz distance = 64kM then FSL = -143

Work as if you are dealing with binary, ie 1,2,4,8,16,32,64,128,256 etc etc.

each time you shift up the scale add -6dB...

Obviously this method is crude, but will give you an approximation within 1dB, this should be close enough for our purposes.

It will not take into account "fresnel zone"

But at least with this method, you only need to remember 3 sets of numbers, 100, 107 and 6.

I think this is an exellent site to visit to calculate, and consider options, and learn about how it works and what the limits are....
http://huizen.deds.nl/~pa0hoo/helix_wif ... linkbudget

Radiomobile is a great one if you can get topographical info for your country.. i love it! just a little hard to get used to at first. its a fantastic link planner to invest time into.