A Note to Leo JJ8KGZ

16 Apr

Good morning Leo. I will listen for you on Saturday around 2200 Zulu. I hope you have good luck with your phased antenna experiments. While planning your experiments you may want to refer to a program called VOACAP. It is a very well known propagation prediction program that runs a set of charts for a month at a time. I ran the program for the short path between JA and Texas on 14 Mhz using dipoles at 35 feet. The best hour is marked by a box and in the case for April, the best hour will be at 2400 Zulu. Of course the path to our West Coast is better and different but I didn’t run that plot. In this case our (TX-JA) the best hour is the hour with the best SNR. I know you have work commitments to consider but you may have some better opportunity just an hour or two later in your day or perhaps note for a future attempt. The RED line is the forecast MUF line for zero SSN. Plot follows:

aprjatous2009My code practice friend and I use this forecasting tool to help plan our code practice sessions each day and it works very well.The graphical interface that I posted above is a shell that takes VOACAP outputs and puts it into a friendly graphical interface called Ham CAP. Both VOACAP and Ham CAP are free downloads on the internet. VOACAP requires a little reading but should you be interested I can point you to some good tutorials. I hope this helps a little bit.

Best of luck with your experiments Leo. Thanks for reading my Blog. Best, Chas W7MAP/5

1 Comment

Posted by on April 16, 2009 in Radio


One response to “A Note to Leo JJ8KGZ

  1. Leo JJ8KGZ

    April 17, 2009 at 3:00 am

    Hi Chas,

    I appreciate your advice.
    I’m going to try to install VOACAP into my PC, too.

    2400Z is no problem for me and I will try to call CQ NA on 14.054MHZ with 5w and 50w.

    Thank you!


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