Spokane DX Association

The first meeting of the SDXA was held on April 11, 2002

Happy 17th birthday to the SDXA!!

Spokane DX Association
13010 S Short Rd
Cheney, WA 99004

1. K1TTT David Robins: BUILDING A SUPER STATION

The history of building the K1TTT amateur radio super station in Peru, MA. You purchase it at $0.00 which means free! 713 pages.

Free PDF download to your computer at this K1TTT LINK.

2. G3TRP Trevor Preece: THE THE VHF/UHF DX BOOK, 2017 Replica Edition

The VHF/UHF DX Book was written in the early to mid-1990s by a team of experienced VHF/UHF DXers and equipment developers, in an effort to pass on our knowledge and stimulate further developments. Looking back, that plan worked very well… for a time. But as we entered the digital age, information of lasting value became trapped on the printed pages and was lost to the next generation of VHF/UHF DXers.
This digital replica of the Second Printing dated 1995 has been released by permission of the copyright owner TRPublishing and its proprietor Trevor Preece G3TRP.

Free PDF download to your computer at this G3TRP LINK.

3. PVRC 2015 ARRL DX CONTEST COOKBOOK

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Free PDF download to your computer at this PVRC COOKBOOK LINK.

Thanks to Mike Buettner K7STO and his friend Woody Jacobson N7HCJ for the March 7 meeting presentation on “Operation Salmon Run and other Contests in the Field”

Today, March 14, is commemorated as international PI day in honor of one of the most important numbers used in our understanding of the physical universe.

Pi is an irrational number, which means it cannot be represented as a simple fraction, and those numbers cannot be represented as terminating or repeating decimals. Therefore, the digits of pi go on forever in a seemingly random sequence. It is the ratio of the circumference of a circle and the diameter of a circle.

Circumference = pi times D where D is the diameter of the circle.

The first hundred digits of PI are:

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 …

And I see that the restaurant Shari’s is offering a free piece of PIE for a ten dollar purchase on Pi Day to existing signed-up customers. A fancy play on words there.

This setup belongs to Del WA7AQH. The monitor is a 48″ LG 4K UHD TV at 3840×2160 resolution. Was $329 at Costco. This is the same screen space as four 24″ monitors running 1080P resolution.

Windows open left side from the top:
N3JFP’s AC Log
WSJT-X
WSJT-X bandscope

Windows open on the right:
XR12 Mixer (background)
Elecraft W-2 power/swr meter
JT-Alert
PSK Reporter in a browser window

Antenna Modeling Orientation — Another great presentation by our local best selling ham author and ARRL Technical Advisor W7SX Bob Zavrel. It was an introduction to “Antenna Modeling”. He focused on EZNEC, which is by far the preferred software program tool for amateurs.

There will be a free follow-up workshop on EZNEC when the weather is better and more safe. We will let you now ahead of time. This now gives you more time to obtain your EZNEC software.

For those that want to use EZNEC, you can purchase it and install on your computer and bring to the workshop. Here is a link to the NW site that sells it:

Bob is the author of the ARRL published book entitled “An Introduction to Antenna Physics“, available from the ARRL or Amazon.com.