-### Upcoming Meetings
+#Upcoming Meetings
-**Thursday, May 12, 7:30 PM** This meeting will be at the [Oakton Library](http://www.fairfaxcounty.gov/library/branches/ok/).
+**Thursday, June 13, 7:30 PM, <a href="http://www.fairfaxcounty.gov/library/branches/dm/">Dolley Madison Library, McLean, VA.</a>
+AMRAD hosts a doubleheader for slow modes: DFCW and JT65.**
-**Thursday, June 9, 7:30 PM** Chris Paton, W3CUM will talk about Skywarn. This meeting will be at the [Oakton Library](http://www.fairfaxcounty.gov/library/branches/ok/).
+The first presentation will be by **André N4ICK** titled **<i>An Arduino-based DFCW Beacon for the 479 KHz Band.</i>** André will discuss Dual Frequency CW (DFCW) and will update us on the ARRL petition to the FCC Office of Engineering and Technology regarding the new band. He will demonstrate his design of an Arduino-based 479kHz beacon, and will expand on the eventual possibility of "crossing the Pond" to communicate with British Hams who have been experimenting for a while with this new allocation.
-### Recent Meetings
+Dual Frequency CW, or DFCW, is a technique where a CW signal is transmitted at a very slow symbol rate, typically at speeds from 1 to 80 seconds per dot. This allows reception in very narrow bandwidths.
-**Thursday, April 14, 7:30 PM** George Lemaster, WB5OYP, showed equipment pictures from Bletchley Park.
+**Terry McCarty, WA5NTI,** will make a presentation on **<i>The JT65 Weak Signal Digital Soundcard Mode.</i>** JT65 can decode signals many decibels below the noise floor making an exception to the old rule “if you can’t hear them, you can’t work them.” Terry has racked up an impressive list of contacts on nearly every band. The mode was developed by Joe Taylor, K1JT as an offshoot to his WSJT weak signal mode widely used in moonbounce contacts. Although JT65 was originally intended for troposcatter and Earth-Moon-Earth paths, Terry is one of the pioneers in using it for low power HF contacts. Terry will tell us where to get the free software, how to configure it, and what you can expect in a contact.
-**Thursday, March 10, 7:30 PM** Greg LeSage, N6LYU, talked on his Beverage antenna system.
+<img src="DFCW_Arduino-based_beacon_for_479kHz.jpg" height="300" width="400">
-### Upcoming Events
+Arduino-based beacon for 479kHz by André, N4ICK
-**April 23.** The Raleigh Hamfest, see: [rars.org](http://rars.org/)
+#Recent Meetings
+May 9, Karl Berger, W4KRL, shared his adventure exploring the possibilities for using the Arduino microcontroller in amateur radio projects. Karl set out a few months ago to make a stand-alone touch screen display for a portable antenna analyzer. He broadened his objective to include a flexible graphic display system that a ham can adapt to station control, test instruments and data logging. Along the way, he overcame challenges in converting his program from “in line” coding to the “object oriented” style and solving unexpected problems with hardware control.
-**May 20-22,** Dayton Hamvention® and ARRL Expo, Dayton, OH, [hamvention.org](http://hamvention.org/)
+April 11, Ron Payne, WA6YOU, demonstrated how to build UHF Yagi antennas for receiving off-air DTV stations, or, for any UHF band application. Ron demonstrated his method of building antennas using spun copper wire for the antenna elements and how to get great results with low cost construction.
+
+#Upcoming Events
-**May 20, 6:30 PM,** AMSAT/TAPR Banquet, Dayton, OH, Kohler Presidental Banquet Center, 4572 Presidential Way, Kettering, OH 45429, [tapr.org](http://tapr.org/)
+**June 9, Manassas Hamfest** Prince William County Fairgrounds, Manassas, VA
+<a href="http://manassashamfest.org/"> http://manassashamfest.org</a> Ole Virginia Hams Amateur Radio Club.
-**May 29.** MFMA Memorial Day Hamfest. West Friencship, MD. [marylandfm.org](http://marylandfm.org/)
+**July 7, Maryland Hamfest and Computer Fest**, West Friendship, MD, <a href="http://bratsatv.org/hamfest/"> http://bratsatv.org/hamfest/</a>
-**Jun 10-11,** ARRL National Convention, Plano, TX, [hamcom.org](http://hamcom.org/)
+**August 4, Berryville Hamfest** Berryville, VA, <a href="http://w4krc.org/hamfest"> http://w4krc.org/hamfest,</a> Shenandoah Valley Amateur Radio Club.
-**June 12,** Manassas Hamfest, Ole Virginia Hams, Manassas, VA [w4ovh.net](http://w4ovh.net/)
+**August 8, Carroll County Tailgate Fest**, Westminster, MD, <a href="http://www.qis.net/~k3pzn"> http://www.qis.net/~k3pzn</a>
-**July 17,** BRATS Hamfest, West Friendship, MD. [bratstv.org](http://bratsatv.org/)
+**September 6, Maryland State Convention (CARAFest)**, West Friendship, MD, <a href="http://carafest.org"> http://carafest.org</a>
-**August 7,** Berryville Hamfest, Berryville, VA [svarc.us](http://svarc.us/hamfest/)
+**October 27, Mason-Dixon Hamfest**, Westminster, MD, <a href="http://www.qis.net/~k3pzn">http://www.qis.net/~k3pzn</a>
-**September 16-18,** ARRL/TAPR Digital Communications Conference, Baltimore, MD, [tapr.org](http://tapr.org/)
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-
[[amradwiki]]
-[[seastateradar.wav]]
+<p> </p>
+<a href="mailto:webmaster@amrad.org">webmaster@amrad.org</a>
projects / amrad.git / blobdiff