Index

1. About Field Strength Pro Ver. 2.0
2. Notice
3. Requirements
4. Usage
5. Acknowledgment

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1. About Field Strength Pro Version 2.0

Field Strength Pro Ver.2.0 is a free software to calculate Expected Field Strength
Value. Field Strength Pro Ver.2.0 is applicable for calculating field strengths of
LF/MF waves for frequencies from about 40 to 500 kHz over ground ranges up
to 16000 km. Field Strength Pro Ver.2.0 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.

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2. Notice

Field Strength Pro Ver.2.0 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 Ver.2.0, and may not distribute Field Strength Pro Ver.2.0
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 Ver.2.0at the following sites:
https://jjy.nict.go.jp/index-e.html

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3. Requirements

Supported operating system:

MS-Windows XP

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4. Usage
4.1 Necessary files
The following files are needed. Extract FSPROv2.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_v2e.exe
         |  AF1.dat
         |  AF2.dat
         |  AF3.dat
         |  CSX.dat
         |  D.dat
         |  DG.dat
         |  F.dat
         |  FCS.dat
         |  FF.dat
         |  FG.dat
         |  FREQ.dat
         |  GCA.dat
         |  GCM.dat
         |  GCR.dat
         |  GCT.dat
         |  GW1.dat
         |  GW3.dat
         |  GW.dat
         |  LATRLONR-e.dat
         |  LATT.dat
         |  LONT.dat
         |  LSTM.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
• LSTM.dat--- Using an editor to give a input of local standard time meridian longitude at receiver in degree with minus sign for western longitude
  (Default) 135
• 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_v2e.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.)
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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 Ver.2.0.