sdr

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Latest blogosphere posts tagged “sdr”

 

• HackRF SDR Giveaway

  
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  HackRF is an upcoming open source DARPA funded ~$300 software defined radio that has both transmit and receive capabilities. It has a 100 MHz to 6 GHz range, 20 Msps sample rate, 8-bit resolution, and 500 beta units are about to be given away for free by greatscottgadgets. A good introduction to the HackRF can be ...
  3 days ago

• RTL_TCP Block for REDHAWK

  
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  An rtl_tcp source block for the REDHAWK software defined radio framework has been released. REDHAWK is a framework similar to GNU Radio , which allows the graphical development of signal processing algorithms for software defined radios. The RTLTcpSource can be downloaded from here . The post RTL_TCP Block ...
  3 days ago

• SDRSharp Frequency Manager + Scanner v1.31 Update

  
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  The SDRSharp Frequency Manager + Scanner plugin has just been updated to version 1.31. Scanning is now extremely fast. Scanner All scanning now uses automatic tuning based on peak signal strength. Mode and squelch do not matter; only the signal strength is used for tuning. A completely re-written scanning ...
  3 days ago

• EtherGeist: FlexRadio 6700 – LF Reception Report and Video

  
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  FlexRadio 6700 – LF reception ….. Another interesting test for any receiver is to see how its LF performance functions. Although we haven’t got low frequency allocations at 137 KHz or 497 KHz yet, hopefully we will in the not too distant future.  I was curious to see how the 6700 would perform at those […]
  4 days ago

• The Future of SDR – Fat-Pipe vs. Thin-Pipe

  
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  One thing that discussions, seminars, and banquets made very clear to me is the fundamental change in SDR design from Fat-Pipe design to Thin-Pipe design. First what is meant by these terms? Fat-Pipe is an SDR software and processing distribution with the on-board in-the-black-box hardware needing an external ...
  4 days ago

• Integrated RTL-SDR HF Upconverter

  
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  Over at KF7LZE’s Blog a post about an upcoming integrated HF upconverter using tiny surface mount components has been posted. It is made by  Marty KN0CK  and will be for sale on  KF7LZE’s  site soon. Marty KN0CK  developed a very interesting  v1.0  HF converter based on surface mount technology that  ...
  1 week ago

• DRM: Dream on Android

  
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  Looks like Dream has been ported to Android: http://sourceforge.net/projects/drm/
  1 week ago

• Virtual Radar Server running on a Raspberry Pi with Mono

  
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  YouTube user  907h9879070g9790  has posted a video showing Virtual Radar Server running on a Raspberry Pi with the Raspian hardfloat image OS installed. He used Mono to allow the .NET based Virtual Radar Server to run on the Raspberry Pi. Instructions for using Virtual Radar Server with Mono can be found here . ...
  2 weeks ago

• Update: Homemade ADS-B Filter now with LNA on the same PCB

  
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  Reddit user BigReid has posted an update on his PCB based hairpin ADS-B filter . He has now added a low noise amplifier (LNA) circuit onto the same PCB board. BigReid used the LNA design written about on this page . The PCB files are here and the Reddit thread can be found here . The post Update: Homemade ...
  2 weeks ago

• Active Wideband Receiver Antenna for SDR - [Alternative LNA Proposals]

  
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  Software Defined Radio (SDR) has finally reached a much broader mass of people, who wanted to play with RF technology, but didnt find the time or resources to learn all necessary skills, to build a hardware based radio. Thanks to the work of the GNU-Radio and OsmoCom developer crowd, this barrier is finally gone and ...
  2 weeks ago

• Discone Vs. Homemade Colinear for ADS-B

  
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  YouTube user  nerdsville  shows a signal reception comparison of his discone antenna and his home made 1090MHz tuned ADS-B colinear antenna in this video. The colinear antenna shows a dramatic improvement over the discone. ADS-B is a broadcast system which can be used to track aircraft like a radar. More ...
  2 weeks ago

• K6TU Recounts the FlexRadio Flex-6700 experience at N6V

  
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  As promised the first hand reports start, with some very favorable impressions made by this new radio: I’ve used every major brand of radio in the 40 years I’ve been licensed and a large number of commercial service radios well beyond my check book. The 6700 is the best receiver I have ever used. Now [...]
  2 weeks ago

• Tracking ships using software-defined radio (SDR)

  
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  When we first started hearing about software-defined radio hacks (which often use USB dongles that ring it at under $20) we didn’t fully grasp the scope of that flexibility. But now we’ve seen several real-life examples that drive the concept home. For instance, did you know that SDR can be used to track ships ? ...
  2 weeks ago

• Digital Noise Reduction Plugin for SDRSharp

  
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  A new digital noise reduction plugin for SDRSharp has been released. It is packaged as part of the SDRSharp binaries. Head to the SDRSharp downloads page , and download and use the automated installer for rtl-sdr under the heading “Important note for RTL-SDR users”. Then in SDRSharp, simply click “Enabled” ...
  2 weeks ago

• Currency Wars: Chinese Gold Rush and American Pravda

  
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  Sometimes there is a juxtaposition of stories that is just too striking.Here is a piece that appeared today in the Peoples Daily Online.  It presents some interesting information on the buying of gold in China during the most recent fluctuation in price.As I seem to recall, China holds so many US dollars that if they ...
  3 weeks ago

• FlexRadio Systems Understatement “Oh, and we shipped the first FLEX-6000 production radios. Not much going on here…”

  
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  Unfortunately the first shipped is not my radio. With my order being among the first placed, I am hopeful of a pre-Dayton ship date – or perhaps I can pick it up while at Dayton? From the latest FlexRadio Systems Insider: A Word from our CEO – FLEX-6000 Signature Series™ Update Dear Steve, Ho hum, [...]
  3 weeks ago

• Cheap Satellite Receive Station with RTL-SDR

  
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  Blogger and Amateur Radio enthusiast  N4JTC  has posted a guide on setting up a satellite receiving station with the rtl-sdr. Originally the guide was intended for receiving the PhoneSat  test satellites, but they have now gone offline after a week as planned. But, the guide is still useful for any current and ...
  3 weeks ago

• Confessions of an SDRaholic: when 4.5 terabytes is not enough

  
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  Alas, ever since I started using Software Defined Receivers (SDRs) last year, I’ve found that I fill up hard drives faster than I can buy them. As you may have noted, I like to make spectrum recordings–especially during the night-time hours, as I slumber. The following morning, upon waking, I’ll “tune” ...
  3 weeks ago

• Home Made Coat Hanger Discone

  
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  Reddit user soooooil has posted a series of images showing his home made Discone antenna made out of wire coat hangers and designed for a minimum frequency of 130MHz. His thread discussing the Discone is here . A Discone is a good general antenna for the rtl-sdr as they are extremely wideband, and can be expected ...
  3 weeks ago

• Meteor Reflection Observations with RTL-SDR

  
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  YouTube user  ek6rsc  has posted a video showing one week of meteor scatter observation at 59.25MHz using the rtl-sdr and the HROFFT software. More information about meteor scatter observations can be found at the page of The International Project For Radio Meteor Observation . The rtl-sdr is handy as a cheap ...
  3 weeks ago

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