For either line-of-sight or multi-hop propagation through the
ionosphere -

- this apparently simple program computes path loss in dB between
transmitter and receiver, field strength at the receiving site, and
receiver S-meter readings. Transmitter power output can be varied
between 10 KW and 1 milliwatt.

It is educational for newcomers and of assistance to DX and
line-of-sight experimenters. It illustates how S-meters OUGHT to work.

Download program PROPGATE from website below in a few seconds and run
immediately. Its at the bottom of the list.
----
.................................................. ..........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. ..........

Have you measured the signal strengths from a few stations of known
locations, power levels, and antenna gains, and compared them with your
program's predictions?

Roy Lewallen, W7EL

Reg Edwards wrote:
For either line-of-sight or multi-hop propagation through the
ionosphere -

- this apparently simple program computes path loss in dB between
transmitter and receiver, field strength at the receiving site, and
receiver S-meter readings. Transmitter power output can be varied
between 10 KW and 1 milliwatt.

It is educational for newcomers and of assistance to DX and
line-of-sight experimenters. It illustates how S-meters OUGHT to work.

Download program PROPGATE from website below in a few seconds and run
immediately. Its at the bottom of the list.
----
.................................................. .........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. .........

Reg Edwards wrote:
For either line-of-sight or multi-hop propagation through the
ionosphere -

- this apparently simple program computes path loss in dB between
transmitter and receiver, field strength at the receiving site, and
receiver S-meter readings. Transmitter power output can be varied
between 10 KW and 1 milliwatt.

It is educational for newcomers and of assistance to DX and
line-of-sight experimenters. It illustates how S-meters OUGHT to work.

Download program PROPGATE from website below in a few seconds and run
immediately. Its at the bottom of the list.
----
.................................................. .........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. .........


Are the formulae used in this program approximate and perhaps do not apply
in circumstances in which you have no time (at this time in your life) to
tell the "secrets" about? Without source code, it is difficult to "read
between the lines".

John

Roy, would you like your money back?

"John - KD5YI" wrote
Are the formulae used in this program approximate and perhaps do not
apply
in circumstances in which you have no time (at this time in your
life) to
tell the "secrets" about? Without source code, it is difficult to
"read
between the lines".

=======================================

John, just for your benefit I have uploaded the source code of program
PROPGATE to my website. You will find it available from "Download
source code from here".

I hope you are able to make sense of it. Please let me know.
----
Reg, G4FGQ

I interpret that as a "no".

Roy Lewallen, W7EL

Reg Edwards wrote:
Roy, would you like your money back?