1 <h1>AMRAD Newsletter</h1>
2 <b>Published bimonthly</b>
3 <br><i>Amateur Radio experimenters specializing in telecommunications technology</i>
4 <p>To receive the Newsletter, join AMRAD by completing the membership application
6 <br>mailing it with dues to AMRAD, PO Drawer 6148, McLean, Virginia 22106-6148,
8 <p><h2>Recent Articles of Interest</h2>
10 <br>Mar-Apr Andre Kesteloot, N4ICK, "Adding an Auxiliary Input to a Bose SoundDock"
11 <br> Hal Feinstein, WB3KDU, "Basic OFDM"
12 <br> Paul Rinaldo, W4RI, "Unconditional Stability of Design (continued)"
13 <br> Andre Kesteloot, N4ICK, "The ABC of uPs"
15 <br>Jan-Feb Dick Barth Synopsis of November 2011 presentation by Dr. Michael King, "Software Defined Radio Systems"
16 <br> "Minutes of AMRAD Annual Meeting, December 15, 2011"
17 <br> "Treasurers Report, December 15, 2011"
18 <br> Paul Rinaldo, W4RI, "Designing for Unconditional Stability"
20 <br>Nov-Dec Dick Barth Synopsis of October 2011 presentation by Bill Fenn, W4TS
21 <br> and Paul Rinaldo, W4RI,"Digital Amateur Television"
22 <br> Karl Berger, W4KRL, "A Dollar Store Switch Mode Power Supply"
23 <br> Terry Fox, WB4JFI, "SDR CUBE - Follow-Up"
24 <br>Sep-Oct Bill Fenn N4TS and Dick Barth W3HWN, "The Saga of W3U"
25 <br> Terry Fox, WB4JFI, "I'll Have My SDR To Go, along with a bag of chips"
26 <br> Terry Fox, WB4JFI, "SDR CUBE - An Initial Overview"
27 <br> Frank Gengtes, K0BRA and Bill Fenn, N4TS, "AMRAD at the 2011 ARRL Field Day"
28 <br> Terry Fox, WB4JFI, "Adding RF Level Control to FPGA Signal Generator"
29 <br>Jul-Aug Dick Barth Synopsis of June 2011 presentation by Christopher Patton, W3CUM/DC006,
30 <br> "SKYWARN"
31 <br> Synopsis of May 2011 presentation by Terry Fox, WB4JFI,<br> "Update on AMRAD: Charleston Chapter, Projects"(via Skype)
32 <br>May-Jun Terry Fox, WB4JFI, "FPGAs Verilog Programming Basics"
33 <br> "AMRAD Field Trip to WMAL Transmitter Site"
34 <br> Frank Gentges, K0BRA, "Yes, Virginia. There is Life after AMRAD"
35 <br> Dick Barth Synopsis of Feb.2011 presentation by Mike Toia, K3MT,
36 <br> "HF Antennas Close to the Ground-the Grass Wire Antenna"
37 <br>Mar-Apr Dick Barth Synopsis of Jan. 2011 presentation by Bill Fenn, N4TS, and
38 <br> Frank Gentges, K0BRA, "Cooking with SMDs"
39 <br> Terry Fox, WB4JFI, "FPGAs Verilog Programming Basics"
40 <br> Frank Gentges, K0BRA, "AMRAD at Orlando Hamcation"
41 <br>Jan-Feb "AMRAD Minutes of Annual Meeting, Dec.14, 2010"
42 <br> Terry Fox, WB4JFI, "FPGAs from Dummies"
43 <br> "AMRAD Minutes of Board Meeting, Dec.18, 2010"
44 <br> Dick Barth Synopsis of Nov.2010 presentation by Doug Lindsey, KB3HER,
45 <br> "SHARES, MARS and Emergency Communications"
46 <br> Dick Barth Synopsis of Oct.2010 presentation by Terry Fox, WB4JFI,<br> "Developments in SDR: The Charleston Receiver and Quisk"(via Skype)
48 <br>Nov-Dec Photo Gallery of Green Bank Visit
49 <br> Dick Barth Synopsis of presentation by Andrew Clegg, W4JE,<br> "The PERSEUS SDR Receiver"
50 <br> Terry Fox, WB4JFI, "Charleston Receiver and Quisk"
51 <br> Dick Barth Synopsis of presentation by Maitland Bottoms, AA4HS,<br> "Radio over Internet Protocols, AMRAD Repeater Enhancements"
52 <br>Sep-Oct Andrew Mitz, WB3LTJ, "WSPR as an Emergency Status Beacon in Major Disasters:<br> A Proposal"
53 <br> Dick Barth Synopsis of presentation by Paul Rinaldo, W4RI, "Radio Propagation<br> Prediction Methods"
54 <br>Jul-Aug Terry Fox, WB4JFI, "iSDR: Now There's an App for That!"
55 <br> Terry Fox, WB4JFI, "Through the Charleston Receiver, Quiskly"
56 <br> Dick Barth Synopsis of presentation by Greg P. Le Sage, N6LYU, "The Automatic<br> Z-Match Tuner"
57 <br>May-Jun Dick Barth Synopsis of presentation by Greg P. Le Sage, N6LYU, "The L-Network<br> Impedence Matcher"
58 <br> Dick Barth Synopsis of presentation by Steve Stearns, K6OIK, "The Smith Chart<br> and its use in Matching Antennas..."
59 <br> Terry Fox, WB4JFI, "Charleston SDR Receiver Software - HELP WANTED!"
60 <br>Mar-Apr Dick Barth Synopsis of presentation by Mark Kanawati, N4TPY, "Texas-A Technical<br> eXchange on AIS via Satellite"
61 <br> "Roger A. Geesey, KG4IRH, SK"
62 <br>Jan-Feb "AMRAD Minutes of Board Meeting, Dec.12, 2009"
63 <br> Dick Barth Synopsis of presentation by Ron Payne, WA6YOU, "Field-Expedient<br> Antennas"
64 <br> Frank Gentges, KØBRA, "IRLP on the AMRAD Repeater"
65 <br> Paul J. Mooney, K4KRE, "An Arduino Project"
68 <br>Nov-Dec André Kesteloot, N4ICK, "Randy Mays, WA6RAM, SK"
69 <br> Frank Gentges, KØBRA, "Charleston Group Build"
70 <br> Dick Barth Synopsis of presentation by Dr. Joe White, WB4OLN, "Time and Frequency<br> Transfer Using TV Signals"
71 <br> Frank Gentges, KØBRA, "Is the FPGA the signal processing implementation<br> of the future?"
72 <br>Sep-Oct Terry Fox, WB4JFI, "Charleston Exciter for Nexys2 FPGA Board"
73 <br> Dick Barth Synopsis of presentation by Bill Fenn, N4TS, "The Transition to Digital TV<br> and the ATSC Format"
74 <br> Frank Gentges, KØBRA, "Surplus Rubidium Frequency Standards"
75 <br>Jul-Aug Dick Barth Synopsis of presentation by Hal Feinstein, WB3KDU, "Fiber Optic<br> Communications"
76 <br> Terry Fox, WB4JFI, "Charleston SDR Receiver"
77 <br> "Minutes of the June 6, 2009 AMRAD Board Meeting"
78 <br>May-Jun Frank Gentges, KØBRA, "Digital Sampling Oscilloscope Review"
79 <br> Dick Barth Synopsis of presentation by Greg P. Le Sage, N6LYU,<br> "RF Linear Electron Accelerators"
80 <br>Mar-Apr Dick Barth Synopsis of presentation by Frederick H.(Fritz) Raab, W1FR,<br> "WD2SXH -- The ARRL 500kHz Experiment"
81 <br> Dick Barth Synopsis of presentation by Rob Seastrom, AI4UC, and Maitland Bottoms,<br> AA4HS, "Implementation of the AMRAD Wiki"
82 <br>Jan-Feb "Summary of AMRAD Meeting, Dec.6"
83 <br> John M. Franke, WA4WDL, "Photo-Electric Amplifier (PEA)"
84 <br> Dick Barth Synopsis of presentation by Rob Seastrom, AI4UC, "An AMRAD Wiki"
85 <br> André Kesteloot, N4ICK, "Feeding my iPhone"
88 <br>Nov-Dec Dick Barth Synopsis of presentation by R.C. Hansen, "Matching Electrically Short Antennas"
89 <br> Dick Barth Synopsis of presentation by Greg P. Le Sage, N6LYU, "RF Skywave Propagation"
90 <br>Sep-Oct Hal Feinstein, WB3KDU, "A Taste of Radio Astronomy"
91 <br> Mike Chisena, KA2ZEV, "Radios for an AMRAD Six-meter Project"
92 <br>Jul-Aug "Pictures of AMRAD presence at Dayton and Skip Pratt's QTH"
93 <br> Dick Barth Synopsis of presentation by Tom Lauzon, P.E., KI4AFE, "RF Exposure Calculations for Hams"
94 <br> "AMRAD Board of Directers June 7, 2008 Meeting"
95 <br> Andy Mitz, WA3LTJ, "Essential Features for Emergency F1/F1 Operations"
96 <br>May-Jun André Kesteloot, N4ICK, "The Parakeet, a Repeater controller for Emergency F1/F1 Operation"
97 <br> Terry Fox, WB4JFI, "SDR-F Hardware Design - 2008 Update"
98 <br> Dick Barth Synopsis of presentation by Bob Bruninga, WB4APR, "APRS, the Automatic Packet Reporting system"
99 <br>Mar-Apr Bob Bruninga, WB4APR, "APRS Meteor Scatter Email System"
100 <br> Dick Barth Synopsis of presentation by Paul Najarian, "the Intelligent Transportation System"
101 <br> Frank Gentges, KØBRA, "Software Defined Radio"
102 <br>Jan-Feb "Summary of 2007 Annual Meeting"
103 <br> "Treasurer's Report 2007"
104 <br> "An Interview with David Brainerd, WB6DHW"
105 <br> Hal Feinstein, WB3KDU, "A Review of Basic Error Correcting Codes"
108 <br>Nov-Dec Dick Barth Synopsis of presentation by Andrew Clegg, W4JE, "Radio Astronomy"
109 <br>Sep-Oct Kesteloot, N4ICK, "A Low Voltage-drop Reverse Voltage Protection Scheme"
110 <br> Paul Rinaldo, W4RI, "AMRAD Bench at ARRL HQ"
111 <br> Dick Barth Synopsis of presentation by David Kuraner, K2DK, "Restoration of Vintage Ham Equipment"
112 <br> "Marius Novi, WB4ENI, SK"
113 <br> Dick Barth Synopsis of presentation by Dennis Sweeney, WA4LPR, "Beyond the Cell Phone: Wireless Widgets and Part 15"
114 <br>Jul-Aug Terry Fox, WB4JFI, "Prototype DDS and QSD Board"
115 <br> Dick Barth Synopsis of presentation by Robert J. Fontana, AK3Y, "Ultra-Wideband Technology - An Update"
116 <br>May-Jun Terry Fox, WB4JFI, "An SDR Hardware Design Example - SDR-F"
117 <br> Dick Barth Synopsis of presentation by Frank Gentges, KØBRA, "Software Defined Radios (SDR)"
118 <br> Dick Barth, W3HWN, "The Garmin Placer GPS 455-DR"
119 <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"
120 <br> Dick Barth Synopsis of presentation by Hal Feinstein, WB3KDU, "Ad Hoc Mobile Networks - Networks Without an Infrastructure"
121 <br> Bob Cullen, W8MAU, "The Biggest Junk Box in the World"
122 <br> André Kesteloot, N4ICK, "Yet Another Morse Code generator/IDer."
123 <br> "report from the Winterfest"
124 <br>Jan-Feb Terry Fox, WB4JFI, "Sound Cards, SoftRocks, and SDRs"
125 <br> André Kesteloot, N4ICK,"An UpConverter for the 500kHz Band"
126 <br> "Minutes of Annual Meeting, and Treasurer's Report 2007"
130 <br>Nov-Dec Dick Barth Synopsis of presentation by Paul Rinaldo, W4RI, "Amateur Preparations for WARC-07"
131 <br> Karl Berger, W4KRL, "Expanded Scale Voltmeter"
132 <br> André Kesteloot, N4ICK, "Zero Beat?"
133 <br>Sep-Oct Dick Barth Synopsis of presentation by Byron "Bo" genner, Lucent, "Next Generation Networks: 3G and IMS"
134 <br> Bob Bruhns, WA3WDR, (encoded title) Circularly Polarized Antenna for HF
135 <br> André Kesteloot, N4ICK, "A 100 Watt CW Transmitter for teh 500kHz Band"
136 <br>Jul-Aug "AMRAD Board of Directors Elects Terry Fox, WB4JFI, as President Emeritus"
137 <br> Synopsis of presentation by Dick Parks, "Non-Cooperative Target Recognition (NCTR)"
138 <br> Dick Barth Synopsis of presentation by Mike Toia, K3MT, "Understanding Antennas - a Mostly Math-free Approach"
139 <br> Dick Barth, E3HWN, "Off to the Races"
140 <br> Dick Barth Synopsis of presentation by Terry Fox, WB4JFI, and Hal Feinstein, WB3KDU, "An Appreciation, and Plans for the Future"
141 <br>May-Jun Alan Melia, G3NYK, "136kHz Propagation Update"
142 <br> Finbar O'conner, EIØCF, "Transmitter/Driver for 136kHz"
143 <br> Mike O'Dell, N4NLN, "When Neatness Counts"
144 <br> André Kesteloot, N4ICK, "An Oven For Your Experiments"
145 <br>Mar-Apr Frank Gentges, KØBRA, "The AMRAD Active Antenna After Five Years"
146 <br> Dick Barth Synopsis of presentation by Dennis Sweeney, WA4LPR, "GPS-Locked Frequency Standard"
147 <br> Dick Barth Synopsis of presentation by Paul Mooney, K4KRE, "Crystal Receiving Sets (slides)"
148 <br>Jan-Feb Dick Barth Synopsis of presentation by André Kesteloot, N4ICK, "Operating tubes at Low Plate Voltages"
149 <br> Dick Barth Synopsis of presentation by Ian McFadyen, KI4HLV, "AMRAD Participation in the 2005 Marine Corps Marathon"
150 <br> "AMRAD Annual Meeting Report" and Treasurer's Summary Report"
154 <br>Nov-Dec Bob Bruhns, WA3WDR, "The Xero-Point: Feedign a Dipole With Coax Without a Balun"
155 <br> Dick Barth Synopsis of presentation by Bob Curry, KC3VO, "KiloWatt Motorcycle Trailer"
156 <br> Dick Barth Synopsis of presentation by Henry Lee, KB1PE, "LF Experiments"
157 <br> "FRS, GMRS, and PMR446"
158 <br> "Manassas BPL Events"
159 <br>Sep-Oct Mike Tuggle, WY3B, "One-JFET BFO Low-Frequency Crystal Receiving Set"
160 <br> "Pictures of AMRAD Van at Field Day"
161 <br> Dick Barth Synopsis of presentation by Ed Kennedy, "HAARP"
162 <br> Mike Chisena, KA2ZEV, "From Our Middle East Correspondent"
163 <br>Jul-Aug André Kesteloot, N4ICK, "The Ohm's Law Puzzle"
164 <br> "AMRAD Extra-Ordinary Board of Directers Meeting May 7, 2005"
165 <br> Dick Barth Synopsis of presentation by Hal Feinstein, WB3KDU, "The 802.11 Protocol"
166 <br> Dick Barth Synopsis of presentation by Ron Payne, WA6YOU, "Attaching Coax Connectors"
167 <br> Paul Rinaldo, W4RI, "Review of: Practical Radio Frequency Test & Measurement"
168 <br>May-Jun Fritz Raab, W1FR, Mike Gladu, N1FBZ/2, & Dan Rupp, "Complementary Class-D Power Amplifier for LF and MF"
169 <br> André Kesteloot, N4ICK, "Ohm's Law, and All That..."
170 <br>Mar-Apr Dick Barth Synopsis of presentation by Frank Maas, "Video Compression Methods"
171 <br> André Kesteloot, N4ICK, "An Emergency Supply for the Home"
172 <br>Jan-Feb "AMRAD Van Work Party" With Pictures
173 <br> "Minutes of AMRAD Annual Meeting December 9, 2004"
174 <br> "Minutes of AMRAD Board of Directors Meeting December 18, 2004"
175 <br> "Treasurer's Report 2004"
179 <br>Nov-Dec Dick Barth Synopsis of presentation by Ron Payne, WA6YOU, "Improvised Antennas"
180 <br> Dick Barth Synopsis of presentation by Steve Cerwin, WA5FRF, "BPL Measurements"
181 <br>Sep-Oct André Kesteloot, N4ICK, "Calibrating your Receiver S-meter"
182 <br> Dick Barth Synopsis of presentation by Tom Lauzon, KI4AFE, "RF Safety"
183 <br>Jul-Aug Hal Feinstein, WB3KDU, "First Steps in Python for the Radio Amateur"
184 <br> Paul Rinaldo, W4RI, "Call for Participation in AMRAD's Vehicle Project"
185 <br> André Kesteloot, N4ICK, "Of This and that"
186 <br>May-Jun Alan Melina, G3NYK, "A Possible Way of Forecasting Good Radio Propagation Conditions on 136kHz"
187 <br> ARRL, "FCC proposes wide-ranging changes to Amateur Service Rules"
188 <br> ARRL, "FCC okays RF Identification tags at 433.5 to 434.5 MHz"
189 <br> ARRL, "ARRL Technology Task Force Forum Set for Hamvention 2004"
190 <br> André Kesteloot, N4ICK, "Digital Radio Mondiale on the Cheap"
191 <br>Mar-Apr Dick Barth Synopsis of presentation by Hal Feinstein, WB3KDU, "Python: A Computer Language"
192 <br> Tom Azlin, N4ZPT, "Concept: Automatic BPL Monitor"
193 <br>Jan-Feb "AMRAD Annual Meeting, December 11, 2003"
194 <br> "Pictures from new AMRAD Repeater site at Tysons Corners"
195 <br>  André Kesteloot, N4ICK, "Operating Relays on 1/2 Their Rated Voltage" <br> "Foundation for Amateur Radio solicits Scholarship Applications"
199 <br>Nov-Dec John Champa,K8OCL, Gerry Creager,N5JXS, Ron Olexa,KA3JIJ, "HSMM Microwave Digital radio"
200 <br> "22nd ARRL and TAPR Digital Communications Conference"
202 <br>Sep-Oct André Kesteloot, N4ICK, "BPL in Maryland"
203 <br> Frank Gentges, KØBRA, "AMRAD HomePlug Test Bed"
205 <br>Jul-Aug André Kesteloot, N4ICK, "A 16-Pole Audio Filter?"
206 <br> Dick Barth Synopsis of presentation by Ron Payne, WA6YOU, "Antenna Construction Made Easy: A 440MHz J-Pole"
207 <br> André Kesteloot, N4ICK, "European NDB Lists"
208 <br> FCC Actions: NOI on BPL, NPRM for unlicensed devices
210 <br>May-Jun Dick Barth Synopsis of presentation by Maitland Bottoms, AA4HS, "From Internet to RF Nets: Software and Amateur Radio"
211 <br> Ian, G3ZHI, "Internet Radio Linking Project"
213 <br>Mar-Apr Dick Barth Synopsis of presentation by Jim Howland, MITRE, "Wifi: 802.11 Protocols"
214 <br> André Kesteloot, N4ICK, "The I5TGC LF-Preamplifier Redux"
215 <br> "Minutes of AMRAD Board of Directors Meeting January 11, 2003"
216 <br> "AMRAD Annual Meeting, January 9, 2003"
218 <br>Jan-Feb "Minutes of AMRAD Board of Directors Meeting December 21, 2002"
219 <br> "Correspondence on AMRAD's Tacos Server"
220 <br> Paul Rinaldo, W4RI, "LF News"
221 <br> André Kesteloot, N4ICK, "A Very Low-Power 136 kHz Test Transmitter"
222 <br> "News from the IARU Region 1 Conference"
223 <br> "New Video Coding Standard Delivers Major Advances in Image Quality"
224 <br> "ARRL High Speed Multimedai Web Site, www.arrl.org/hsmm"
227 <br>Nov-Dec Frank Gentges, KØBRA, "LF Network Analyzer"
228 <br>
229 Charles W. Rhodes, "Digital Television (DTV) Briefing to AMRAD"
230 <br>Sep-Oct A. Maitland Bottoms, AA4HS, "Internet Remote
232 <br>Jul-Aug Paul L. Rinaldo, W4RI, "AMRAD
233 HF Flexible Loop Antenna"
234 <br>May-Jun: Frank Gentges, KØBRA, "AMRAD LF Noise Generator"
235 <br>Apr-May: M Johnston via Alan Melia, G3NYK, "A History of Rugby
237 <br>Jan-Feb: André Kesteloot, N4ICK, "A Remote
239 <br>
240 Paul Rinaldo, W4RI and George Lemaster, WB5OYP, "Amateur Digital
242 <br>
243 Paul Rinaldo, W4RI, "Digital Voice Bibliography"
245 <br>Nov-Dec: Frank Gentges, KØBRA, "The AMRAD LF Upconverter Project"
246 <br>Sep-Oct: Olivier Ernst, F5LVG, "A Simle Frequency Stabilizer"
247 <br>
248 Frank Gentges, KØBRA, "AMRAD LF Toolbox Concept"
249 <br>Jul-Aug: Paul Rinaldo, W4RI, "On Digital ATV"
250 <br>
251 Frank Gentges, KØBRA, "Volna K Review"
252 <br>
253 Dick Barth, W3HWN, "Bluetooth," presentation by James Howland
254 <br>
255 George Lemaster, WB5OYP; Terry Fox, WB4JFI; Paul Rinaldo, W4RI, "Digital
257 <br>May-Jun: Frank Gentges, KØBRA, "Unraveling the dBm at
259 <br>
260 Dick Barth, W3HWN, "Ultra-Wideband Technology," presentation by Dr Robert
262 <br>
263 Frank Gentges, KØBRA, "Early Intermodulation History"
264 <br>
265 André Kesteloot, N4ICK, "LF Notes"
266 <br>Mar-Apr: Dominique Delerablée, F1FRV, "Interface for use
268 <br>Jan-Feb: Dominique Delerablée, F1FRV, "Interface
269 for Connection between Modems and Transceivers"
270 <br>
271 André Kesteloot, N4ICK, "LF Notes"
272 <br>
273 André Kesteloot, N4ICK, "Bok Review: The RSGB's Low Frequency Experimenter's
275 <br>
276 Bob Bruhns, WA3WDR, "Digital Audio Processing," a book review
277 <br>
278 Bob Bruhns, WA3WDR, "Reducing FSK Bandwidth with GMSK"
279 <p>Last modified: December 28, 2010 by WB4JFI</p>