Index

1. About Field Strength Pro
2. Notice
3. Requirements
4. Usage
5. Acknowledgment

-------------------------------------------------------------------------------
1. About Field Strength Pro

Field Strength Pro is a free software to calculate Expected Field Strength
Value. Field Strength Pro is applicable for calculating field strengths of
LF/MF waves for frequencies from about 40 to 500 kHz over ground ranges up
to 4000 km. Field Strength Pro is primarily based on the wave hop method in
Rec. ITU-R P.684 for the sky-waves and on Rec. ITU-R P.368 for the ground-wave.

-------------------------------------------------------------------------------
2. Notice

Field Strength Pro is a free software.

There is no warranty for damages caused by using this application.

Without written permission by the authors, you may not distribute
modified Field Strength Pro, and may not distribute Field Strength Pro
for profit.

Before you send requests, questions and bug reports to the authors,
please read carefully this file.

The author will appreciate any kind of support from you
if it does not put the authors under some obligation.

You can find the e-mail address of the authors and you may find the latest version of Field Strength Pro at the following sites:
https://jjy.nict.go.jp/index-e.html

-------------------------------------------------------------------------------
3. Requirements

Supported operating system:

MS-Windows XP

-------------------------------------------------------------------------------
4. Usage
4.1 Necessary files
The following files are needed. Extract FSPRO.lzh to get the following files.

4.2 Configuration of file construction and give a necessary input of data file
The file configuration example is as follows.

/FS/
         |  fs_pro_e.exe
         |  AF1.dat
         |  AF2.dat
         |  AF3.dat
         |  CSX.dat
         |  D.dat
         |  DG.dat
         |  F.dat
         |  FCS.dat
         |  FF.dat
         |  FG.dat
         |  FREQ.dat
         |  GCM.dat
         |  GCR.dat
         |  GCT.dat
         |  GW1.dat
         |  GW3.dat
         |  GW.dat
         |  LATRLONR-e.dat
         |  LATT.dat
         |  LONT.dat
         |  MON.dat
         |  P.dat
         |  PS.dat
         |  RCX1.dat
         |  RCX2.dat
         |  RCX3.dat
         |  RESUL.dat
         |  YR.dat

• FREQ.dat --- Using an editor to give a input of operating frequency of transmitter in kHz
  (Default) 60
• LATRLONR-e.dat --- Using an editor to give the inputs of city name and geographic latitude and longitude of receiver in degrees and its decimals with minus sign for southern latitude, three input data are separated using space.
  (Default) Tokyo 35.68 139.68
• LATT.dat --- Using an editor to give a input of geographic latitude of transmitter in degrees and its decimals with minus sign for southern latitude
  (Default) 33.47
• LONT.dat --- Using an editor to give a input of geographic longitude of transmitter in degrees and its decimals with minus sign for western longitude
  (Default) 130.18
• P.dat --- Using an editor to give a input of transmit power in kW
  (Default) 25
• mon.dat --- Using an editor to give a input of month infomation for which the calculation be made
  (Default) 10
• YR.dat --- Using an editor to give a input of Solar activity epoch(ssn).
  In case of ssn in the range of 0-25, YR = 1.
  In case of ssn in the range of 26-75, YR = 2.
  In case of ssn in the range of 76-150, YR = 3.
  (Default) 2
  

4.3 Execution of the application

Double-click executable file( fs_pro_e.exe) to make it carry out.

4.4 Output

A file name as FSresult-e0.txt is saved simultaneously with the output of display.
(If the Quantities to be input are all in the value of default, the output results will give the expected field strength of Tokyo from Hagane-yama LF station, Japan.)
-------------------------------------------------------------------------------
5. Acknowledgment

The authors would like to thank everyone who sent bug reports and suggestions.
The authors especially thank the people who have supported the development of
Field Strength Pro.