Tagged: sdr drm

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Have your own HAM SWL radio station!

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Gadget of the past? HAM SWL radio station!

In most cases we write posts about unique designs and ides, which are useful for advanced level HAM SWL radios, e.g., this or that posts on software defined radio (SDR) technology. But what about the beginners? Well this post is for them! Ready, steady, HAM SWL Radio!

Some weeks ago I was surfing the internet looking for some new ideas for a special issue of Quadrus SDR. It was easy to find a creative idea for my problem, and to prove to my family that HF broadcasting is alive. We can access high quality radio service there based on new, digital operation mode (i.e., DRM), which has a very useful community for SDR fans. When I started to deal with HAM SWL radio, there were no opportunities such as the internet. It was ooch… 35+ years ago. We – the members of the community – talked to each other only using the radio at the club station or using our self-made radios at home, but it was an amazing experience that I never forget. I had my own HAM radio station at home – built with my own hands from scratch – with CW capability for the 80m ham radio band. Lovely, isn’t it? (and I was 17 years old when I made this…)

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I have two sons. They are not interested in making, but they are professional in using gadgets. Like every teenager nowadays. Maybe my father said the same thing about my HAM radio equipment. Gadget.

Do or do not, there is no try

So, what about beginners? I found a very good post about how to start this kind of a hobby. Hobby? No! This is a way of life. I could not summarize this better then Gregory L. Charvat:

“The only way to get started is to build something. Start small, check out the QRP community, try making a single-conversion receiver, and move up to something with a crystal IF filter. Borrow and scale circuits from books such as these:

Or leverage complete ICs and modules like those from Mini-Circuits.  There is nothing like making that first long distance contact (DX) on radio gear you created from scratch.”

You can read the whole article on Hackaday.

But if you are more of a computer geek, you can switch to software implemented radio and start with less complex and less expensive SDRs or a professional one like Quadrus SDR from our webshop. Even I experienced that old fashioned radio moment Gregory mentioned above, when I first received a DRM station from Mubay, which was a very nice feeling for my radio infected heart. You can see the report on this reception here in the Quadrus SDR blog:
http://spectrafold.com/quadrus/radio-software/sdr-drm-receiver/

Further reading on DRM, the new digital HF broadcast technology:
http://spectrafold.com/quadrus/go/whitepaper-drm-broadcasts/

And don’t forget to share your success stories or questions regarding SDR issues with us on our Facebook pageTwitter page, or G+ community page. Be social; whatever is your preferred platform, we are there !

Bertalan, HA6QU

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QUADRUS SDR | Phase-coherent Multi-channel SDR

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Phase-coherent SDR hardware | Multi-channel SDR receiver | digitizer SDR hardware and receiver SDR software | QUADRUS SDR platform
Phase-coherent SDR hardware | Multi-channel SDR receiver | digitizer SDR hardware and receiver SDR software | QUADRUS SDR platform

QUADRUS SDR | Phase-coherent Multi-channel SDR

The QUADRUS SDR platform is complete ready to use integrated platform for advanced SDR software received implementation. It contains all the elements for a complete SDR receiver functionality. The phase-coherent SDR hardware digitizer with Windows driver and open API. The multi-channel SDR software receiver with advanced signal processing and open programming and remote control interface on TCP/IP. It can be used as a single element or as part of the higher level integrated system. During its entire lifetime already proved capabilities with lot of deployment in mission critical environments. Now it is available for the public use and further integration developments.

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Phase-coherent SDR hardware digitizer

The DRU-244A high speed phase-coherent digitizer SDR hardware multi-channel SDR hardware. With on board input leveling, low noise preamplifier and multi-channel SDR digital down conversion (DDC) capability. The DRU-244A SDR hardware has outstanding dynamic range performance with carefully optimized design for SDR hardware implementation. The high-performance SDR hardware design is the combination of high bandwidth and high dynamic range with excellent sensitivity. QUADRUS SDR hardware enables demanding applications such as RF/IF direct sampling SDR receiver. Excellent spectral purity in combination with gain control. The DRU-244A is ideal for advanced digital radio SDR software receiver implementation. Originally developed for professional signal and communication intelligence and spectrum monitoring and management application by Sagax Communications.

DRU-244A phase-coherent SDR hardware digitizer card
DRU-244A phase-coherent SDR hardware digitizer card

Multi-channel SDR software receiver

The SRM-3000 is a ready to run high performance multi-channel SDR software receiver application for the QUADRUS SDR receiver platform. Particularly suitable for spectrum monitoring and management,  communication and signal intelligence. It allows simultaneous monitoring and recording multi-channel of modern digital narrow or wide band signals. While the streaming of the IF or the demodulated audio signals can be streamed to the TCP/IP interface. The SDR software receiver has its application programming interface (API) for higher level integration. It combines state-of-the-art user interface technologies with the latest features in digital signal processing thus providing advanced SDR software receiver platforms available today. It was developed by Sagax Communications for search and intercept tasks in signal and communication intelligence applications and deployed to the field in several missions.

SRM-3000 multi-channel SDR software receiver application
SRM-3000 multi-channel SDR software receiver application

Read more phase-coherent SDR hardware multi-channel SDR software: QUADRUS SDR BLOG.

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