--- /dev/null
+Test February 14, 2013
-<b>About AMRAD</b>
+#About AMRAD
AMRAD began as an informal group in 1972 and incorporated in the Commonwealth
of Virginia in 1975 as a nonprofit organization, Corporate ID 0159906-7.
scientific and educational organization, EIN 51-0176767.
The purpose of AMRAD is to develop skills and knowledge in radio and
-electronic technology, advocate design of experimental equpment and techniques,
+electronic technology, advocate design of experimental equipment and techniques,
promote basic and applied research, organize technical forums and symposiums,
collect and disseminate technical information and provide repeaters.
AMRAD is affiliated with the National Association for Amateur Radio,
<a href="http://www.arrl.org/">ARRL</a>.
-AMRAD is a member of <a href="http://www.t-marc.org/">The Mid-Atlantic
+AMRAD is a member of <a href="http://www.tmarc.org/">The Mid-Atlantic
Repeater Council (T-MARC)</a>.
+
+<a href="mailto:webmaster@amrad.org">webmaster@amrad.org</a>
+++ /dev/null
-# News - AMRAD.org is now a Wiki.
-
-Yes, there is a new way to add content at AMRAD.org
-
-As a wiki, it has a [[sandbox]]
-
-Wiki editing access is for AMRAD members, newsletter authors,
-meeting speakers and other invited guests.
-
-When clicking on **Edit** in the left sidebar, you
-will authenticate yourself as a member. Your initial
-credentials are your callsign (in upper case) and
-password from your AMRAD Newsletter mailing label.
-(That is in the form PW#####, appearing above your name.
-If it is not there, then you are currently not paid
-up, or you have one of our complimentary copies.)
-
-There are a few levels of confusion in the authentication
-process:
-
-* Your username and password are protected in transit over the Internet by an https:// channel.
-
-* The https:// uses the self-signed certificate of the host: atanasoff.rf.org
-
-* Self-signed certificates used by web servers will most likely cause your browser to complain.
-
-* Since the hostname given is not the host amrad.org, your browser will complain.
-
-* You will have to tell your browser that you accept this connection and the certificate.
-
-* You will then get the prompt window for your AMRAD username and password.
-
-* Members without a callsign use last name in uppercase for a username.
-
-* Most members will use the callsign in uppercase for a username.
-
-* Use the password from the Newsletter label - type the PW in uppercase and the 5 digits.
-
-* You are welcome to request another username and password pair... secure form for that will be ready soon.
-
-* There have been two presentations given on the AMRAD Wiki: [[news/wikipresentation200811.pdf]] and [[news/wikipresentation200901.pdf]]
-
-
-
-Enjoy the Wiki
-
-[[!calendar ]]
-### Upcoming Meetings
+#Upcoming Meetings
-**Thursday, March 8, 7:30 PM** Dolley Madison Library, McLean: Terry McCarty, WA5NTI, will tell us how he has automated his ham station with a PC to make working, logging, and QSLing DX stations easy.
-
-**Thursday, April 19, 7:30 PM** Dolley Madison Library, McLean: (NOTE: Third Thursday) To be announced.
+**Thursday, June 13, 7:30 PM, <a href="http://www.fairfaxcounty.gov/library/branches/dm/">Dolley Madison Library, McLean, VA.</a>** Terry McCarty, WA5NTI, will make a presentation on the JT65 weak signal digital soundcard mode. 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.
-### Recent Meetings
-**Thursday, 16 February** Jerry Wolczanski, KI4IO, described the high performance Low Frequency (LF) receiver he designed and built as well as his vintage German Torn E.b regenerative LF receiver. Jerry has logged many LF Non Directional Beacons (NDBs) with a very interesting LF antenna he designed.
-For those who may be interested follow this URL to a video of this meeting:
-
-http://www.justin.tv/amrad01/b/308797384
-
-Bill, N4TS
-
-**Thursday, January 12** Greg LeSage, N6LYU, made a presentation on performance modeling of the Terminated Folded Dipole.
-### Upcoming Events
+#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.
-**February 26** Vienna Wireless Society Winterfest, Northern Virginia Community College, Annandale, VA, http://www.viennawireless.org/winterfest.php
-
-**March 10&11** 2012 Charlotte Hamfest and ARRL Roanoke Division Convention, http://www.w4bfb.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.
+
+March 14, Andrea Hartlage, KG4IUM, former Vice Director ARRL Southeastern Division, was our guest speaker. She touched on two topics: "How to Involve Youth in Ham Radio and A Look Inside the ARRL Board Room.” She recently graduated from Georgia Institute of Technology and is now located in the Washington area.
-**March 17** Charleston WV Area Hamfest, Charleston, WV, www.w8gk.org
+#Upcoming Events
-**March 31** Greater Baltimore Hamboree & Computerfest, Timonium, MD, www.gbhc.org.
+**May 17, 18, 19, Dayton Hamvention™** Hara Arena. <a href="http://www.hamvention.net">www.hamvention.net.</a>
-**April 29** Springfest, Chesapeake, VA, Chesapeake Amateur Radio Service
-www.W4CAR.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 18-20** Dayton Hamvention, Dayton, OH, Dayton Amateur Radio Association,
-www.hamvention.org/index.php. AMRAD will be there.
+**August 4, Berryville Hamfest ** Berryville, VA, <a href="http://w4rkc.org/hamfest"> http://w4rkc.org/hamfest</a> Shenandoah Valley Amateur Radio Club.
----
-
[[amradwiki]]
-[[seastateradar.wav]]
+<p> </p>
+<a href="mailto:webmaster@amrad.org">webmaster@amrad.org</a>
+++ /dev/null
-### Upcoming Meetings
-
-**Thursday, April 14, 7:30 PM** George Lemaster, WB5OYP, will show equipment pictures from Bletchley Park. This meeting will be at the [Thomas Jefferson Library, 7415 Arlington Boulevard (U.S. Rte 50), Falls Church, VA.](http://www.fairfaxcounty.gov/library/branches/tj/)
-
-### Recent Meetings
-
-**Thursday, March 10, 7:30 PM** Greg LeSage, N6LYU, will talk on his Beverage antenna system. This meeting was held at the [Oakton Library](http://www.fairfaxcounty.gov/library/branches/ok/).
-
-**Thursday, February 10, 7:30 PM** Mike Toia, K3MT, will talk on antenna modeliing and antenna theory. This meeting will be at the [City of Fairfax Regional Library, 10360 North Street, Fairfax, VA](http://www.fairfaxcounty.gov/library/branches/fx/). Meeting entrance is in the parking garage, other doors are closed at meeting time.
-
-**Thursday, January 13, 7:30 PM** Frank Gentges, KØBRA, will make a presentation on the latest do-it-yourself surface mount techniques.
-
-**Tuesday, December 14** At this Annual Meeting, we elected the following Directors and Alternates.
-
- Directors: Terry Fox, WB4JFI and George Lemaster, WB5OYP (2011-2012)
-
- Alternates: Paul Mooney, K4KRE and Rob Seastrom, AI4UC (2011)
-
-The meeting approved a project proposed by Bill Fenn, W4TS, for a special event commemorating the First Battle of Manassas in July 2011, details to be developed. See minutes of this meeting in the Jan-Feb 2011 issue of the AMRAD Newsletter.
-
-**Wednesday, November 10** This meeting was a briefing by Doug Lindsey, KB3HER, on SHARES, MARS and emergency communications related to continuity of government.
-
-### Upcoming Events
-
-**April 23.** The Raleigh Hamfest, see: [http://rars.org/](http://rars.org/)
-
-----
-
-[[news]]
-
-[[seastateradar.wav]]
-# feedback to AMRAD via email
+#Feedback to AMRAD via email
How are we doing?
* <a href="mailto:praise@amrad.org">praise@amrad.org</a></li>
* <a href="mailto:complaints@amrad.org">complaints@amrad.org</a></li>
-# AMRAD mailing lists
+#AMRAD mailing lists
## <a href="http://www.amrad.org/mailman/listinfo/tacos/">tacos</a>
--- /dev/null
+Another Test
Annual Meetings, the business of the organization is conducted by the Board.
**Monthly meetings** are held usually on the second Thursday of each month,
-starting at 7:30 PM at the libraries in the Northern Virginia area. See home page for dates/times and locations.
+starting at 7:30 PM at the <a href="http://www.fairfaxcounty.gov/library/branches/dm/" target="_blank">Dolley Madison Library</a> 1244 Oak Ridge Avenue, McLean, VA 22101. <a href="http://www.bing.com/maps/?FORM=MLOMAP&PUBL=GOOGLE&CREA=userid1743gobroadfphumem2khvlw7ml8dkb3h3kcgsoxz1369#JnE9LjEyNDQlMmJPYWslMmJSaWRnZSUyYkF2ZW51ZSUyYiUyYk1jTGVhbiUyNTJjJTJiVkElMmIyMjEwMSU3ZXNzdC4wJTdlcGcuMSZiYj02MC4xNDA3MTQ5MDU2MDkzJTdlLTM2LjIwMzIwMTI5MzUlN2U4LjgxODM3MTI1Mzg3OTA5JTdlLTExNy44NTM1OTE5MTg1">(map)</a> See home page for current dates/times and locations.
**Saturday luncheons** are held weekly around 12:30 PM at <a href="http://www.tippys.com/">Tippy's Taco House</a>
8632 Lee Highway (US Rte 29) near Cedar Lane, Merrifield, (Fairfax),VA
<a href="http://maps.google.com/maps?f=q&hl=en&geocode=&q=8632+Lee+Hwy+Fairfax,+VA+22031&sll=37.0625,-95.677068&sspn=57.641503,49.21875&ie=UTF8&z=16&g=8632+Lee+Hwy+Fairfax,+VA+22031&iwloc=addr">(Map)</a>
-**FM talk-in** is on the AMRAD repeater near Tysons Corner, VA. The input frequency is 147.81, the output is 147.21 MHz.
+**FM talk-in** is on the <a href=/w4cia>AMRAD repeater</a> near Tysons Corner, VA. The input frequency is 147.81, the output is 147.21 MHz.
USA
</pre>
- <h1>feedback to AMRAD via email</h1>
+<h4>Feedback to AMRAD via email</h4>
How are we doing?
<ul>
<li><a href="mailto:praise@amrad.org">praise@amrad.org</a></li>
-<li><a href="mailto:complaints@amrad.org">complaints@amrad.org</a></li>
+<li><a href="mailto:complaints@amrad.org">complaints@amrad.org</a></li>
+<li><a href="mailto:webmaster@amrad.org">webmaster@amrad.org</a?</li>
</ul>
+++ /dev/null
-# News - AMRAD.org is now a Wiki.
-
-Yes, there is a new way to add content at AMRAD.org
-
-As a wiki, it has a [[sandbox]]
-
-Wiki editing access is for AMRAD members, newsletter authors,
-meeting speakers and other invited guests.
-
-When clicking on **Edit** in the left sidebar, you
-will authenticate yourself as a member. Your initial
-credentials are your callsign (in upper case) and
-password from your AMRAD Newsletter mailing label.
-(That is in the form PW#####, appearing above your name.
-If it is not there, then you are currently not paid
-up, or you have one of our complimentary copies.)
-
-There are a few levels of confusion in the authentication
-process:
-
-* Your username and password are protected in transit over the Internet by an https:// channel.
-
-* The https:// uses the self-signed certificate of the host: atanasoff.rf.org
-
-* Self-signed certificates used by web servers will most likely cause your browser to complain.
-
-* Since the hostname given is not the host amrad.org, your browser will complain.
-
-* You will have to tell your browser that you accept this connection and the certificate.
-
-* You will then get the prompt window for your AMRAD username and password.
-
-* Members without a callsign use last name in uppercase for a username.
-
-* Most members will use the callsign in uppercase for a username.
-
-* Use the password from the Newsletter label - type the PW in uppercase and the 5 digits.
-
-* You are welcome to request another username and password pair... secure form for that will be ready soon.
-
-* There have been two presentations given on the AMRAD Wiki: [[news/wikipresentation200811.pdf]] and [[news/wikipresentation200901.pdf]]
-
-* And the video of the Wiki(418 Mb)Presentation is [[wikivideo.avi]]
-
-
-
-Enjoy the Wiki
-
-[[!calendar ]]
-
-
-
-[[news/wikivideo.avi]]
<br>mailing it with dues to AMRAD, PO Drawer 6148, McLean, Virginia 22106-6148,
USA
<p><h2>Recent Articles of Interest</h2>
+<p><b>2013</b>
+<br>May-Jun "David Wilson Borden, K8MMO (SK)"
+<br> Hal Feinstein, WB3KDU, "An RF Transmitter Project that Uses The Raspberry Pi"
+<br> Dick Barth Synopsis of Apr.2013 presentation by Ron Payne, WA6YOU,
+<br> "Over-the-Air Digital Television and Field-Expedient TV Antennas"
+<br> Review by Karl Berger, W4KRL, "Ham Radio for Arduino and PICAXE, Edited by Leigh Klotz Jr. WA5ZNU"
+<br> Dick Barth Synopsis of Mar.2013 presentation by Andrea Hartlage, KG4IUM,
+<br> "Involving Youth in Ham Radio and A Look Inside the ARRL Board Room"
+<br>Mar-Apr Vienna Wireless Winterfest Photos, AMRAD
+<br> AMRAD Minutes of January 19, 2013 Board Meeting
+<br> Dick Barth Synopsis of Feb. 2013 presentation by Paul Mooney,
+<br> K4KRE,"An Experimental SDR Project"
+<br> Karl Berger, K4KRL, "Op-Amp Development Kit"
+<br> Paul Justin Time, J1NTM, "HUMOR - An AMRAD Microprocessor Project"
+<br> Dick Barth Synopsis of Jan. 2013 presentation by Jim Veatch,
+<br> WA3EUJ,"ARRL Homebrew Challenges"
+<br>Jan-Feb "AMRAD December 13, 2012 Minutes of Annual Meeting"
+<br> Dick Barth Synopsis of November 2012 presentation by Andre Kesteloot, N4ICK,
+<br> "A 40-Meter Class E Rig", and George Lemaster, WB5OYP, "Non-Linear Effects"
+<br> Paul J. Mooney, K4KRE, "Glenn Baumgartner's Moon Bounce"
+<br> "AMRAD 2012 Financial Report, Presented at 2012 Annual Meeting"
+
<p><b>2012</b>
+<br>Nov-Dec October 2012 presentation by Terry Fox, WB4JFI,"Arduino Fun"
+<br> Paul J. Mooney, K4KRE,"A Low-Cost Introduction to Software Defined Radio"
+<br> Dick Barth Synopsis of Sept. 2012 presentation by John Donaldson,
+<br> AB8YZ,"Applications of HSMM-MESH"
+<br>Sep-Oct Dick Barth Synopsis of August 2012 presentation by Bob Sullivan, W0YVA,"Boat Anchor Restoration"
+<br> "Joe Novak, K4OVK (SK)"
+<br> Dick Barth Synopsis of June 2012 presentation by Sir Richard O’Neill,
+<br> Wizard3 (a.k.a. KBRSJ),"How to Make a Crystal Set"
+<br> Dick Barth Synopsis of May 2012 presentation by Kevin Whipp, W3KDW,
+<br> David Bern, W2LNX and Vic Nardo, WB2U,"HSMM-MESH"
+<br> Picture of ARRL Stand at Berryville 2012 Hamfest
+<br>Jul-Aug Dick Barth Synopsis of March 2012 presentation by Terry McCarty, WA5NTI,
+<br> "Automating a Ham Station (DXLab)"
+<br> Karl Berger, W4KRL, "A Dollar Store Boost Mode Converter for LED Bulbs"
+<br> Dick Barth Synopsis of April 2012 presentation by Brennan Price, N4QX,
+<br> "WARC-12 and a Possible domestic Allocation at 472-479 kHz"
+<br>May-Jun Andre Kesteloot, N4ICK, "Further to the ABC of uPs"
+<br> Bill Fenn, N4TS, "AMRAD Displays SMT Soldering at the National Electronics Museum Robot Fest"
+<br> Dick Barth Synopsis of Jan.2012 presentation by Greg LeSAge, N6LYU,
+<br> "The Terminated Folded Dipole (T2FD) Antenna"
+<br> David York, K9KUB, "Review: THe Spiratronics Picaxe Dice Project Kit"
+<br> Reprint, "Practical Radio Ideas, misc tube and other"
+<br> Photo, "AMRAD Gang One Saturday at Tacos"
+<br>Mar-Apr Andre Kesteloot, N4ICK, "Adding an Auxiliary Input to a Bose SoundDock"
+<br> Hal Feinstein, WB3KDU, "Basic OFDM"
+<br> Paul Rinaldo, W4RI, "Unconditional Stability of Design (continued)"
+<br> Andre Kesteloot, N4ICK, "The ABC of uPs"
<br>Jan-Feb Dick Barth Synopsis of November 2011 presentation by Dr. Michael King, "Software Defined Radio Systems"
<br> "Minutes of AMRAD Annual Meeting, December 15, 2011"
<br> "Treasurers Report, December 15, 2011"
<br> Dick Barth Synopsis of presentation by Andrew Clegg, W4JE,<br> "The PERSEUS SDR Receiver"
<br> Terry Fox, WB4JFI, "Charleston Receiver and Quisk"
<br> Dick Barth Synopsis of presentation by Maitland Bottoms, AA4HS,<br> "Radio over Internet Protocols, AMRAD Repeater Enhancements"
-<br>Sep-Oct Andrew Mitz, WB3LTJ, "WSPR as an Emergency Status Beacon in Major Disasters:<br> A Proposal"
+<br>Sep-Oct Andrew Mitz, WA3LTJ, "WSPR as an Emergency Status Beacon in Major Disasters:<br> A Proposal"
<br> Dick Barth Synopsis of presentation by Paul Rinaldo, W4RI, "Radio Propagation<br> Prediction Methods"
<br>Jul-Aug Terry Fox, WB4JFI, "iSDR: Now There's an App for That!"
<br> Terry Fox, WB4JFI, "Through the Charleston Receiver, Quiskly"
<br>May-Jun Terry Fox, WB4JFI, "An SDR Hardware Design Example - SDR-F"
<br> Dick Barth Synopsis of presentation by Frank Gentges, KØBRA, "Software Defined Radios (SDR)"
<br> Dick Barth, W3HWN, "The Garmin Placer GPS 455-DR"
-<br>Mar-Apr Dick Barth Synopsis of presentation by Maj. Gen. (USA, Ret) Charles G. (Chuck) Sutten Jr. "Tactical Communications-An Operator's Perspective, 1956-2006"
+<br>Mar-Apr Dick Barth Synopsis of presentation by Maj. Gen. (USA, Ret) Charles G. (Chuck) Sutten Jr. "Tactical Communications-
+<br> An Operator's Perspective, 1956-2006"
<br> Dick Barth Synopsis of presentation by Hal Feinstein, WB3KDU, "Ad Hoc Mobile Networks - Networks Without an Infrastructure"
<br> Bob Cullen, W8MAU, "The Biggest Junk Box in the World"
<br> André Kesteloot, N4ICK, "Yet Another Morse Code generator/IDer."
Bob Bruhns, WA3WDR, "Digital Audio Processing," a book review
<br>
Bob Bruhns, WA3WDR, "Reducing FSK Bandwidth with GMSK"
-<p>Last modified: December 28, 2010 by WB4JFI</p>
+<p>Last modified: March 17, 2013 by WB4JFI</p>
* Bill Fenn, N4TS (12-13)
-* Terry Fox, WB4JFI (11-12)
+* Frank Gentges, KØBRA (12-13)
-* Frank Gentges, K0BRA (12-13)
+* George Lemaster, WB5OYP (13-14)
-* George Lemaster, WB5OYP (11-12)
+* Terry McCarty, WA5NTI (13-14)
* Paul Rinaldo, W4RI (12-13)
**Alternates:**
-* Rob Seastrom, AI4UC (12)
+* Terry Fox, WB4JFI (13)
-* Paul Mooney, K4KRE (12)
+* Paul Mooney, K4KRE (13)
**Officers:**
* SDR & DSP: Terry Fox, WB4JFI
-* LF: André Kesteloot, N4ICK and Frank Gentges, K0BRA
+* LF: André Kesteloot, N4ICK and Frank Gentges, KØBRA
* Satellite: Mark Kanawati, N4TPY
# AMRAD Projects
<ul>
+<li><strong>Small Board Microcontrollers</strong> <a href="/projects/sbc/">Single-Board Microcontroller Applications</a> References,resources, project ideas, and progress reports for AMRAD member projects using the Arduino, Rasperberry Pi, BASIC Stamp and others.</li>
<li><a href="/projects/lf/">LF: Low Frequency Operation</a></li>
<li><strong>Mainstreaming <a
# AMRAD SDR & DSP Projects
This page supports both SDR and DSP work. Terry, WB4JFI
-
+Test
---
#SDR WORK
#AMRAD Low Frequency Web Page
-**NEW ITEMS TO CHECK OUT:**
+<!-- **NEW ITEMS TO CHECK OUT:** save this heading for new items when we have them -->
* [AMRAD Presentation on LF Impedance Measurement, HFC2002, London England, 12 OCT 2002](ImpedanceMeter.pdf) (pdf)
-* [AMRAD Remote Receiver Paper](amradio.pdf) (pdf)
-* [Larry Kayser's, PIC Program](PIC8_4B.ASM) .ASM file
+* [AMRAD Remote Receiver Paper](amradio.pdf) (pdf) <!-- * [Larry Kayser's, PIC Program](PIC8_4B.ASM) .ASM file VA3LK (SK) -->
* [AMRAD Comments on FCC LF Allocation Notice of Proposed Rule Making RM-9404](NPRMComments.pdf) (pdf)
* [CEPT draft recommendation on LF allocation to Radio Amateurs](CEPT-LF.pdf) (pdf)
* [AMRAD LF Upconverter makes April, 2002 QST, Errata Note](UPERR.pdf) (pdf)
unusual challenges (read ``problems''). The wavelength at 187 kHz is 1 mile,
and a quarter wave is 1,320 feet! It gets worse. At 137 kHz where the
wavelength becomes 1.3 miles and a quarter wave vertical would reach up 1800
-feet. Worse yet at 76 kHz the wavelength is 2.46 miles.
+feet. Worse yet at 76 kHz the wavelength is 2.46 miles.{1}
Hence for those of you interested in building
your own equipment, getting the maximum out of necessarily inefficient
antenna design.</span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l4 level1 lfo14;tab-stops:list .5in'><span style='font-size:13.5pt'>AMRAD
- member Andre' N4ICK has a nifty design that combines an E-Field probe and
+ member André N4ICK has a nifty design that combines an E-Field probe and
varactor tuned preamp to limit overload by strong stations. You can see
his work here. <a href="lfpreamp.html">N4ICK LF preamp</a></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
Transmitters can be either
very efficient switchers or audio amplifiers with bandwidth extending to 200
-Khz or beyond. Glenn KA0ESA and Andr� N4ICK are busy building such
+Khz or beyond. Glenn KA0ESA and André N4ICK are busy building such
contraptions. AMRAD purchased and has tested a commercial transmitter made in
Holland. See a review <a href="FirstRvw.html">here</a>.
href="jan2000\index.html">Nags Head NC</a></b><span style='font-size:13.5pt'>
and some of the spectrograms we got there.</span> </p>
------
+##New JT9 Mode for MF and LF:
+
+If you are on 472 or 137 kHz, you may be interested in a new mode called JT9, designed especially for making QSOs on these bands. JT9 uses the structured messages introduced in 2003 for the JT65 mode, now widely used for EME and for QRP operations at HF. JT9 can operate at signal levels as low as -27 dB (in a 2500 Hz reference bandwidth), with one-minute timed transmissions. It also offers slower transmissions of 2, 5, 10 and 30 minutes duration, and the slowest mode can decode signals as weak as -40 dB. With one-minute transmissions, submode JT9-1 has a total bandwidth of 15.6 Hz -- less than one-tenth the bandwidth of a JT65A signal. The other submodes are narrower still: a JT9-30 signal occupies about 0.4 Hz total bandwidth.
+
+JT9 is implemented in an experimental version of WSJT called WSJT-X. Some further details can be found at
+<a href="http://www.physics.princeton.edu/pulsar/K1JT/wsjt.html"> http://www.physics.princeton.edu/pulsar/K1JT/wsjt.html</a>. The author, <a href="mailto:k1jt@arrl.net">Joe K1JT</a>, requests feedback with your experience with JT9. Please tell him you saw the link on the AMRAD website.
<p><a name=DspIntregration></a><b><span style='font-size:18.0pt;font-family:
Arial'>DSP INTEGRATION:</span></b> </p>
<a href="mailto:k0bra@amrad.org">Frank K0BRA</a>
-<a href="mailto:n4ick@amrad.org">Andre' N4ICK</a>
+<a href="mailto:n4ick@amrad.org">André N4ICK</a>
We have posted some additional construction information to this web page to help in the construction.
-ARRL has posted the construction article now at
-[http://www.arrl.org/tis/info/pdf/0109031.pdf](http://www.arrl.org/tis/info/pdf/0109031.pdf).
-
-[[projects/lf/actant/ActAnt1.jpg]]
+ARRL has granted permission to post the QST article <a href="LF_antenna_QST0109031_K0BRA.pdf">here</a>. You may also find the QST article on the ARRL website at <a href="http://www.arrl.org/files/file/Technology/tis/info/pdf/0109031.pdf">http://www.arrl.org/files/file/Technology/tis/info/pdf/0109031.pdf</a>.
To help with gathering parts
for your AMRAD Active Antenna project we have put together two parts
##[Power Supply Parts](psparts)
We have been getting some questions about the whys and hows of the antenna. We have compiled an
-FAQ. You can view it here <A HREF="faq.htm">FAQ</A> or download it as an Acrobat
-document <A HREF="faq.pdf">here</a>.
+FAQ. You can download it as an Acrobat
+document <a href="faq.pdf">here</a>.
--- /dev/null
+#AMRAD Single-Board Microcontroller Applications
+
+
+Single-board microcontrollers such as the BASIC Stamp, PICAXE, and Arduino and small-board computers like the Raspberry Pi have great potential for amateur radio applications. AMRAD is promoting the development of transmitters, receivers, test equipment, and station accesories utilizing microcontrollers.
+
+##AMRAD Microcontroller Projects
+* Karl, W4KRL, is developing a stand-alone touch screen LCD display controller for the miniVNA vector analyzer. He displayed a working version at the 2013 Vienna Wireless Winterfest. You can follow his progress on his website at <a href="http://www.w4krl.com/projects/"> www.w4krl.com.</a><br>
+
+* Jeff, N6SDR, is exploring the use of an Arduino driving a stepper motor connected to a variable capacitor to remotely tune a magnetic loop antenna. Ultimately, the rig could communicate the operating frequency to the Arduino which would set the capacitor to the correct value with no tune up.
+
+* Hal, WB3KDU, is generating FM directly from a Raspberry Pi. See his article in the May/June 2013 Newsletter.
+
+####Suggested Projects
+Add your project to this list - leave a comment in "Contact Us" at <a href="http://www.w4krl.com/contact_us">www.w4krl.com</a>
+<table border="1">
+ <tr>
+ <td>SWR scanner with graphic display</td>
+ <td>Data logger to SD card</td>
+ </tr>
+ <tr>
+ <td>Station battery Amp-hour monitor</td>
+ <td>Final amp power supply sequencer</td>
+ </tr>
+<tr>
+<td>Audio switching among rigs, speakers and soundcards</td>
+<td>Beacon controller</td>
+</tr>
+<tr>
+<td>Cooling fan controller</td>
+<td>APRS messaging and mapping</td>
+</tr>
+<tr>
+<td>Transistor (or tube!) curve tracer</td>
+<td>Repeater controller</td>
+</tr>
+<tr>
+<td>Emergency generator overvoltage or frequency protector</td>
+<td>Time domain reflectometer cable tester</td>
+</tr>
+ </table>
+
+##Arduino Resources
+<img src="http://www.amrad.org/projects/sbc/Ham_Radio_Arduino.jpg" width="200" height="300"><br>
+<b>New from the ARRL:</b> <a href="http://www.arrl.org/shop/Ham-Radio-for-Arduino-and-PICAXE/">Ham Radio for Arduino and PICAXE.</a> See a review by Karl W4KRL in the May/June 2013 Newsletter.<br>
+<a href="http://www.arduino.cc">www.arduino.cc</a> <br>
+<a href="http://www.adafruit.com">www.adafruit.com</a> <br>
+AMRAD Arduino presentation at the 2013 Vienna Wireless Winterfest. [[Arduino_winterfest.pdf]]
+
+
+
+
+
<h2>How Can I Get Involved?</h2>
-AMRAD welcomes participation in new developments in amateur spread spectrum. This
-includes, but is not limited to:
+AMRAD welcomes participation in new developments in amateur spread spectrum. This includes, but is not limited to:
<ul>
<li> construction and testing of new spread spectrum radios
<li> experimenting with spectrum sharing techniques
<li> supporting the modernization of Part 97 spread spectrum rules
</ul>
- <hr>
- <a href="mailto:webmaster@amrad.org">The AMRAD Webmaster</a>
+<p> </p>
+<hr>
+<a href="mailto:webmaster@amrad.org">The AMRAD Webmaster</a>
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--- /dev/null
+[[!meta title="Microcontroller Projects"]]
+This is a new page.
Welcome IRLP visitors!
-The IRLP node [4721](http://status.irlp.net/IRLPnodedetail.php?nodeid=4721) associated with the repeater is not yet fully operational. Expect
+The IRLP node [4721](http://status.irlp.net/?nodeid=4721) associated with the repeater is not yet fully operational. Expect
intermittent availability during the testing period.
#AMRAD W4CIA Repeater Coverage Analysis</h1>
<a href="Dscn1142.jpg"><img src="Dscn1142.png"></a>
<a href="Dscn1140.jpg"><img src="Dscn1140.png"></a>
-#License
+#Trustee
+André Kesteloot, N4ICK
+<!-- hide outdated license
<a href="w4cialic.jpg"><img src="w4cialic-sm.png"></a>
+-->
projects / amrad.git / commitdiff
