Learn and research amateur radio, science, chemistry, biology, physics, math, astronomy, electronics, and much more. PORTAL to. Predicting Propagation in Ham Radio with VOACAP Online. Programming. Ham Radio. Predicting Propagation in Ham Radio with VOACAP Online. By H. Ward Silver Operating on the high frequency HF ham radio bands can be very exciting as conditions change around the world. To help you be in the right place at the right time, propagation prediction programs are available. Behind Closed Doors Torrent. Many are free, such as the Ham. Note for WindowsNT2000XP installation The icons to execute the software may not install properly on WindowsNT2000XP systems. Here is a solution. Factors.gif' alt='Voacap Software' title='Voacap Software' />Operating on the highfrequency HF ham radio bands can be very exciting as conditions change around the world. To help you be in the right place at the right time. Ham. net is a Web site dedicated to ham radio amateur radio. Cap software from Alex Shovkoplyas VE3. NEA. The online prediction service VOACAP Online is easy to use and helps you understand propagation. Both programs use VOACAP, the underlying engine that does all the calculation based on current solar information. You can have a lot of fun with propagation prediction programs, but remember they arent exact conditions can change from day to day and hour to hour and while youre on the computer, youre not on the air making contacts Heres how to use VOACAP Online, starting with entering the Date information in the top right corner of the screen 1. Microsoft Isa Server Control. Make sure that the month and year are correct. Dont enter a value for SSN Smoothed Sunspot Number, because the program will obtain it from an online source. Select a transmitting location from the Transmitter Site sections QTH menu typically, your home location. U. S. cities are listed in the W section select one near you. Later, you can enter direct latitude and longitude if you want to be exact, but it wont make a great deal of difference. When you make a selection, the red map pin moves to that location. Select a receiving location from the Receiver Site sections QTH menu. The distance and bearing information below the map updates, and the blue pin moves to the receiving location. Leave all antenna, power, mode, and other information alone for now. The screen looks like the one shown here with a map on the left and the leend information on the right. Click the button labeled Run the Prediction A new window appears. Each of the HF amateur bands is marked as a black line across the graph with increasing frequency along the vertical axis. Universal Coordinated Time UTC is shown along the horizontal axis. The color bar on the right shows the probability that your transmitted signal will be heard at the receiving site. Sunrise and sunset at each location are shown below the graph. In this particular scenario, theres a pretty good chance of being heard in Kenya from central Missouri on the 1. UTC, followed by a 4 hour potential opening on the 2.