Disk No: 1420
Program Title: HAM RADIO
PC-SIG version 1

HAM RADIO offers three fairly technical programs to assist the
enthusiastic amateur radio hobbiest.

SCHART is a Smith Chart impedance matching program.  Given a "load"
impedance, the program calculates new input impedances for any
combination of passive matching elements you choose.  Outputs are
listed in tabular form with resistive and reactive values given for
each frequency of operation.  If you wish to analyze the impedances as
a function of frequency, a graphics option is included which draws a
Smith Chart and plots the impedances.

HFPROP calculates expected ground-wave communications ranges (in
miles) from 3.5 to 50 MHz based upon inputs of frequency, transmitter
power, receiver sensitivity, antenna parameters, and type of terrain.

VHFPROP computes expected communications ranges (in nautical and
statute miles) from 100 MHz to 3.5 GHz based on inputs of frequency,
transmitter power, receiver sensitivity, and antenna parameters.
Specs are included for ground-to-ground, ground-to-air, and air-to-air
applications plus free-space line-of-sight information useful for
satellite communications predictions.

Synopsis:  Three specialized programs for the experienced ham radio
operator.  Replaces paper tables and speeds up computations.

Usage:  Hobbies/Ham Radio/Electronics.

Special Requirements:  CGA card.

How to Start:  Type GO (press enter).

Suggested Registration:  $15.00, ($20.00 Airmail outside USA) brings
the latest version, a printed manual and a copy of the source code.

File Descriptions:

HFPROP    EXE HF propagation program.
SCHART    EXE Smith chart program.
VHFPROP   EXE VHF propagation program.
README        Documentation.

PC-SIG
1030D E Duane Avenue
Sunnyvale CA 94086
(408) 730-9291
(c) Copyright 1989 PC-SIG, Inc.