tag:blogger.com,1999:blog-18242289742065255622024-02-21T10:23:32.081-08:00RASDR4Anonymoushttp://www.blogger.com/profile/09459872544845542749noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-1824228974206525562.post-6121648922148300272018-01-15T17:09:00.000-08:002018-01-15T17:15:41.126-08:00Alpha 5 software<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-eunGVvepoIU9x_7zilAMigzmLmq5GumO9IbycuS7nWQ_cNX0zqeREq7aUZhwlB5UbC-6WcYIYz4nYMyIjXfIabsmgD_GQ0Ew9TOwdIrCgXEA2A_40JfACw4yOuDsxtDgMbJbTldasl1k/s1600/rasdr4-p1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1142" data-original-width="1600" height="228" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-eunGVvepoIU9x_7zilAMigzmLmq5GumO9IbycuS7nWQ_cNX0zqeREq7aUZhwlB5UbC-6WcYIYz4nYMyIjXfIabsmgD_GQ0Ew9TOwdIrCgXEA2A_40JfACw4yOuDsxtDgMbJbTldasl1k/s320/rasdr4-p1.png" width="320" /></a></div>
We are releasing Alpha 5 of our RASDR4 software. Please see the links to the right for 64-bit versions for Windows 7/8/10 and Linux (Ubuntu 16.04).<br />
The distributions contain everything needed to run and do not require any special configuration beyond what LimeSDR requires for USB driver configuration. Included is a users' manual.<br />
This version focuses on dual channel RSSI measurement, recording, and graphing. We are starting on streaming IQ/FFT processing now. Anonymoushttp://www.blogger.com/profile/09459872544845542749noreply@blogger.com1tag:blogger.com,1999:blog-1824228974206525562.post-38745595699701922152017-11-09T22:39:00.003-08:002017-11-09T22:40:45.085-08:00We are sold out of basic kits (enclosure). Fan kits are still available, please see order link on the right side. For bill of materials and design information, please contact <span style="background-color: white; color: #666666; font-family: "Trebuchet MS", Trebuchet, Verdana, sans-serif; font-size: 12px;">RASDR-LLC@att.net.</span>RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-18068243974830088612017-08-31T18:06:00.001-07:002017-08-31T18:06:24.897-07:00Software<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBei-JJkB2DYOQjhjXKN1LcYKJ8J-A3PXsT292NO0ja4QacIBaq5tlMY45XelqmB_6EutISMd83zT2f-gZyxp8c_XfXhDBYer2QhkjcLTJxKrTcVSH-M7P-Rc0lGw95uuAC0D4eyQFJHIx/s1600/rasdr4-snap.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="764" data-original-width="1160" height="131" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBei-JJkB2DYOQjhjXKN1LcYKJ8J-A3PXsT292NO0ja4QacIBaq5tlMY45XelqmB_6EutISMd83zT2f-gZyxp8c_XfXhDBYer2QhkjcLTJxKrTcVSH-M7P-Rc0lGw95uuAC0D4eyQFJHIx/s200/rasdr4-snap.png" width="200" /></a></div>
The team is about to release software that provides the foundation for general radio astronomy tasks support; it currently focuses on collecting total power via dual channel RSSI measurement. Versions for Linux, macOS and Windows will be available and require no installation with the exception of Windows user selecting a USB driver. We will post the software in the next few days, including a users' guide.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhiwIWzXjq41RlHclAn9zi8zt3ZnH87aoNrk19eUByfofDsRbjh60x1QA8hDZZrdF-VYus-KwTmiV9u0bn0bZ3zC5NETjda9Hlaav1WrmexvEmOlaC2K99Lc-yblo9LhcdZRZ8SJe66xOTn/s1600/rssi-graph.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: right;"><img border="0" data-original-height="504" data-original-width="1200" height="132" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhiwIWzXjq41RlHclAn9zi8zt3ZnH87aoNrk19eUByfofDsRbjh60x1QA8hDZZrdF-VYus-KwTmiV9u0bn0bZ3zC5NETjda9Hlaav1WrmexvEmOlaC2K99Lc-yblo9LhcdZRZ8SJe66xOTn/s320/rssi-graph.png" width="320" /></a></div>
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<br />Anonymoushttp://www.blogger.com/profile/09459872544845542749noreply@blogger.com2tag:blogger.com,1999:blog-1824228974206525562.post-19053307618942406732017-08-31T17:35:00.001-07:002017-08-31T17:35:43.617-07:00Radio Astronomy Highlights<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIr8Rz_fWCvth46LKz4TE-J9MVKYRza8_hGDzRuTKaP4-AU8CvGgDKzWk-5V43L7rMqIzfJuT4MwJVbz39zRJAQWvZIWFZMrceXixZ-O-8sJSZGK6K2ozunngFV296Y1JOh5A0dW3wr9Ma/s1600/rssi-a.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="223" data-original-width="360" height="198" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIr8Rz_fWCvth46LKz4TE-J9MVKYRza8_hGDzRuTKaP4-AU8CvGgDKzWk-5V43L7rMqIzfJuT4MwJVbz39zRJAQWvZIWFZMrceXixZ-O-8sJSZGK6K2ozunngFV296Y1JOh5A0dW3wr9Ma/s320/rssi-a.png" width="320" /></a></div>
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Two recent radio astronomy applications using RASDR4 / LimeSDR are David Lonard's use of <a href="https://groups.google.com/forum/#!topic/amateur-radio-interferometry/LjKKLTl2uNM">LimeSDR for interferometry @ 1420.4 MHz </a>using a Python and GPU processing; and the second is a simple experiment conducted by members of the RASDR4 team and others during the eclipse. Part of the experiment was unsuccessful, and we are still analyzing 432MHz total power (RSSI) data collected from a YAGI antenna. A separate posting will describe new software we are about to release for MIMO RSSI collection.</div>
Anonymoushttp://www.blogger.com/profile/09459872544845542749noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-45864820073709186322017-07-01T16:27:00.002-07:002017-07-01T16:45:34.166-07:00<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYBC4FYTiUiUejMs1rPTx9WI1OhVi0RwqhX5nQNAf6_Y8G-zpEoOkItmdej5lVHc04hCjkXtc5_YfjJqXZU2FDaX5aVAFTseIQ5CC8-qDBU0APPTUuS5H1jkT5p5wGKL0shj4LI8sN5GGz/s1600/large-fan-kit.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="456" data-original-width="888" height="101" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYBC4FYTiUiUejMs1rPTx9WI1OhVi0RwqhX5nQNAf6_Y8G-zpEoOkItmdej5lVHc04hCjkXtc5_YfjJqXZU2FDaX5aVAFTseIQ5CC8-qDBU0APPTUuS5H1jkT5p5wGKL0shj4LI8sN5GGz/s200/large-fan-kit.png" width="200" /></a></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;">We are selling a new larger fan kit to allow for operation in ambient air conditions up to 112F / 44C.</span></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;">The larger 30x30x15mm fan now attaches to the top shell and provides more than 4 times the airflow as the small internal fan kit. The fan may be powered internally or externally (if mounted externally). For further details, please see:</span><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;"> <a href="https://drive.google.com/open?id=0BxwgBcUXvEe2OU9ZS2FBcWV4Vjg">+ version 1.8 assembly instructions</a></span></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"> <a href="https://drive.google.com/open?id=0BxwgBcUXvEe2dmlVQzltZzh2MVk"><complete id="goog_1205238673">+ </complete>optional external power configuration</a></span></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"> <a href="https://drive.google.com/open?id=0BxwgBcUXvEe2ZnQ3X3NxYVBUZ00">+ thermal dissipation testing</a></span></div>
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<span style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">The new fan kit is available to order by clicking on the order link on the top right.</span></div>
RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-62993647299371860622017-02-21T21:35:00.000-08:002017-02-22T20:35:16.734-08:00Fan art<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheqKkR2e7u-O9tm_QmR9PaSiUkGnw6BkvvRauU9JbWGAbo3Cwr61flHtBxSkjXFcw-D36WhVrTQc6cvk-tsQRxx4Eq9IzbzNkM1mk61r85hlQ-YkOX8FgxWVraAsBCGF12Hqv4M9mEvr6Q/s1600/fan-art.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheqKkR2e7u-O9tm_QmR9PaSiUkGnw6BkvvRauU9JbWGAbo3Cwr61flHtBxSkjXFcw-D36WhVrTQc6cvk-tsQRxx4Eq9IzbzNkM1mk61r85hlQ-YkOX8FgxWVraAsBCGF12Hqv4M9mEvr6Q/s320/fan-art.png" width="320" /></a><br />
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David F. took this picture after assembling the next set of fan kits. Splicing 28 gauge wire to join the connector with the fan wires is not easy.RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com2tag:blogger.com,1999:blog-1824228974206525562.post-67621124504990799602017-02-20T17:57:00.001-08:002017-02-20T18:08:44.731-08:00SARA Western Regional Conference discounted kits<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJLhMaJCijWq9WuojNj7jtrlgaOdx7PvpwcV-5omHkszDN3rzglYRg_vpSASxb5DD2raswKJz_eLaOOp8yfNvc94hmXyacq0gPkrQ4ov4FQVwGVvABG60pKvqucp4hPnyA3NxtsIBRRJim/s1600/512643main_LWA-1_Station_at_Sunset-43_946-710.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJLhMaJCijWq9WuojNj7jtrlgaOdx7PvpwcV-5omHkszDN3rzglYRg_vpSASxb5DD2raswKJz_eLaOOp8yfNvc94hmXyacq0gPkrQ4ov4FQVwGVvABG60pKvqucp4hPnyA3NxtsIBRRJim/s1600/512643main_LWA-1_Station_at_Sunset-43_946-710.jpg" /></a>Are you going to the <a href="http://radio-astronomy.org/node/260">SARA Western Regional Conference</a> in March? Members of the RASDR4 team will bring several enclosure kits and will be selling them at a discounted price (the normally included price of shipping). To order one for delivery at the conference, click on the Order kits link on the right side of this page and click the link under <span style="font-family: "calibri"; font-weight: 700;">BUY IT NOW AND PICK IT UP AT A SARA MEETING.</span></div>
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RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-91382787877854068002017-01-07T12:33:00.001-08:002017-01-07T12:33:30.440-08:00Kit photos<div class="separator" style="clear: both; text-align: right;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwtsh3cRdaC2fv3L_JxOg7aCMww2JQ8V-sSFq4ZI8glYzM_64LXpN0GWYgsagLXFTK_wLfPkMB_rNemd1RcW6mfDcFumUoEjhJXySOUmLuB4fGQUYgQrFW90bIEnXBDHYcfKLpHydZMc9l/s1600/rasdr4-kit-with-fan.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: left;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwtsh3cRdaC2fv3L_JxOg7aCMww2JQ8V-sSFq4ZI8glYzM_64LXpN0GWYgsagLXFTK_wLfPkMB_rNemd1RcW6mfDcFumUoEjhJXySOUmLuB4fGQUYgQrFW90bIEnXBDHYcfKLpHydZMc9l/s200/rasdr4-kit-with-fan.png" width="200" /></a></div>
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Photos of the enclosure kit and fan posted -- see Pictures in Links.</div>
RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-43719630981762229822017-01-01T13:38:00.003-08:002017-02-20T17:44:19.118-08:00Orders now livePlease see the ordering information on the right side of this page or click this <a href="https://drive.google.com/file/d/0BxwgBcUXvEe2SDAzaTB0ekpnSWM/view?usp=sharing">order form</a>. Design features are in the previous posting.<br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;">The RASDR4 Enclosure Kit is based on our early delivery LimeSDR v1.2 board. Lime is shipping v1.4 and this will be the focus of our RASDR4 user documentation. Progress has been documented in the last few issues of the SARA Journal.</span><br />
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Users should monitor board temperature during operation. The team chose the above features to support our plans for radio astronomy measurements in a variety of environments.<br />
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A basic Enclosure Kit is available at a cost of $75 (postage included).<span style="border: 0px; margin: 0px; padding: 0px;"> </span>Users need to supply their own LimeSDR with a USB Type A extension cable and an optional DC power cable/source.<span style="border: 0px; margin: 0px; padding: 0px;"> <span style="font-family: inherit;"> </span></span><span style="font-family: inherit;">SMA connector cables <span style="font-family: inherit;"><span style="background-color: white;">from selected </span><span style="background-color: white;">ports </span>(typically 4 RF, 1 clock and 1 user option) </span><span style="background-color: white;">to the board connection points</span></span><span style="font-size: xx-small;"> </span>are included, but external antenna and LNA are not included.<span style="border: 0px; margin: 0px; padding: 0px;"> </span>The D-sub connector is for planned expansion.<br />
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The team is working on a GPIO subkit that will include ESD and over-voltage protection.<span style="border: 0px; margin: 0px; padding: 0px;"> </span>A challenge to testing is that the Altera FPGA firmware must be modified to test operation.<span style="border: 0px; margin: 0px; padding: 0px;"> </span>We could use help with FPGA programming, general software development, documentation and testing. If you’d like to be a member of the team or help with our observing projects/documentation, contact David Fields (<a href="https://www.blogger.com/blogger.g?blogID=1824228974206525562" style="border: 0px; color: #1155cc; cursor: pointer; margin: 0px; padding: 0px;">fieldsde@aol.com</a>). For questions about orders, software options, or LimeSDR questions, contact Paul Oxley (<a href="https://www.blogger.com/blogger.g?blogID=1824228974206525562" style="border: 0px; color: #1155cc; cursor: pointer; margin: 0px; padding: 0px;">oxleys@att.net</a>).<span style="border: 0px; margin: 0px; padding: 0px;"> </span>To discuss our software and website, contact Tony Bigbee (<a href="https://www.blogger.com/blogger.g?blogID=1824228974206525562" style="border: 0px; color: #1155cc; cursor: pointer; margin: 0px; padding: 0px;">tony.bigbee@gmail.com</a>).<span style="border: 0px; margin: 0px; padding: 0px;"> </span>For project management information, contact Wayne McCain (<a href="https://www.blogger.com/blogger.g?blogID=1824228974206525562" style="border: 0px; color: #1155cc; cursor: pointer; margin: 0px; padding: 0px;">Wayne.McCain@athens.edu</a>).<span style="border: 0px; margin: 0px; padding: 0px;"> </span>To discuss interactions with the professional community and advanced projects, contact Stan Kurtz (<a href="https://www.blogger.com/blogger.g?blogID=1824228974206525562" style="border: 0px; color: #1155cc; cursor: pointer; margin: 0px; padding: 0px;">skurtz@mailaps.org</a>).<br />
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RASDR4 and all of its supporting hardware/software are considered an experimental, development-level kit product. No warranty is expressed or implied by RASDR, LLC, beyond shipping shortages or component defects. The LimeSDR board and components are not warrantied by RASDR, LLC.RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-37629744369193257772016-12-28T20:16:00.002-08:002017-01-01T16:38:22.745-08:00<div class="separator" style="clear: both; text-align: left;">
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<li><span style="text-indent: 0in;">All parts supplied with kit:</span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"> </span><span style="text-indent: 0in;">no soldering, cutting, filing or special assembly required;</span></li>
<li><span style="text-indent: 0in;">Sturdy .06” / 1.5 mm custom stainless steel panels with laser cut openings and etched markings;</span></li>
<li><span style="text-indent: 0in;">Six SMA connectors with coaxial cable leads and u.FL connectors, covering (2) RX, (2) TX, (1) </span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"> </span><span style="text-indent: 0in;">Optional IO, and (1) Reference Frequency Input;</span></li>
<li><span style="text-indent: 0in;">Extruded </span><span style="border: 0px; font-size: small; margin: 0px; padding: 0px; text-indent: 0in;">black </span><span style="text-indent: 0in;">anodized aluminum split shell case with </span><span style="border: 0px; font-size: small; margin: 0px; padding: 0px; text-indent: 0in;">post-aodization reamed </span><span style="text-indent: 0in;">screw holes;</span></li>
<li><span style="text-indent: 0in;">Passive cooling design resulting in air flow </span><span style="border: 0px; font-size: small; margin: 0px; padding: 0px; text-indent: 0in;">through RF and control </span><span style="text-indent: 0in;">panel ventilation holes, adequate </span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"></span><span style="text-indent: 0in;">for </span><span style="border: 0px; font-size: small; margin: 0px; padding: 0px; text-indent: 0in;">single-channel </span><span style="text-indent: 0in;">Receive Operations at typical ambient room temperature;</span></li>
<li><span style="text-indent: 0in;">Active cooling (using optional fan) to mitigate the effect of </span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"> </span><span style="text-indent: 0in;">higher ambient temperatures or </span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"> </span><span style="text-indent: 0in;">simultaneous operation of multiple TX/RX functions;</span></li>
<li><span style="text-indent: 0in;">GPIO port: D-SUB 15 position connector can be integrated with a forthcoming</span><span style="border: 0px; margin: 0px; padding: 0px; text-indent: 0in;"><ins datetime="2017-01-01T10:33" style="border: 0px; margin: 0px; padding: 0px;"> </ins></span><span style="text-indent: 0in;">GPIO Kit;</span></li>
<li><span style="text-indent: 0in;">External visibility of all activity/status LED sets;</span></li>
<li><span style="text-indent: 0in;">Design attention to limit corrosion in selection of materials and contact points; and</span></li>
<li><span style="text-indent: 0in;">Design attention to shielding and ground loop prevention.</span></li>
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<br />RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-85302168344158929212016-12-13T17:38:00.001-08:002016-12-28T17:45:43.898-08:00<br />
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Fabrication is complete for the 20 sets of end panels in our first production run. Laser cut and laser etched/sintered 1.5mm thick stainless steel.RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0tag:blogger.com,1999:blog-1824228974206525562.post-603594792277631842016-12-11T09:04:00.001-08:002016-12-11T09:04:09.463-08:00Greetings to the RASDR4 blogspot. It's December 12 (as of this moment) and new announcements will be posted this week!RASDR LLChttp://www.blogger.com/profile/12305766691642398157noreply@blogger.com0